Inspired by @Paul Raven posts earlier in this thread looking back at 1986/87 ratings, I'm tracing the path of Aaron Spelling reaching his goal of Dynasty being bigger and better than Dallas.
1982/83: Dynasty gets its first weekly win over Dallas and overall gets three weekly wins over Dallas. These episodes were
November 10, 1982: The Wedding, rating 25.8, 3rd for the week. Dallas (November 12: Hit and Run, rating 24.7) was 4th.
December 29, 1982: The Locket, rating 19.3, 16th for the week. Dallas (December 31: Mama Dearest, rating 18.3) was 24th.
February 2, 1983: Two Flights to Haiti, rating 24.3, 4th for the week. Dallas (February 4: Crash of ’83, rating 24.0) was 5th.
At the end of the season, Dynasty was 5th (up from 19th in 1981/82) and Dallas was 2nd (down from #1 in 1981/82).
1983/84: Dynasty gets its first weekly #1 finish over Dallas and overall gets two #1 finishes and two weekly wins over Dallas. These episodes were
January 11, 1984: Lancelot, rating 25.7, 3rd for the week. Dallas (January 13: Offshore Crude, rating 24.2) was 6th.
March 14, 1984: The Voice (Part 1), rating 24.6, #1. Dallas (March 16: The Unexpected, rating 24.4) was 2nd.
May 2, 1984: New Lady in Town, rating 25.2, #1. Dallas (May 4: Love Stories, rating 23.8) was 2nd.
May 9, 1984: The Nightmare (season 4 finale), rating 25.7, 3rd for the week. Dallas (May 11: Hush, Hush Sweet Jessie, rating 24.4) was 4th.
At the end of the season, Dynasty was 3rd and Dallas was #1.
1984/85: Aaron Spelling went all out to be the biggest and best, mainly by cashing in on Diana-mania. Little did we know that a rookie hit was waiting in the wings ready to blow up. I divide 1984/85 into two parts, pre-Super Bowl and post-Super Bowl.
Pre-Super Bowl
September 26, 1984: Disappearance (season 5 premiere), rating 22.2, 4th for the week. Dallas (September 28: Killer at Large (season 8 premiere), rating 26.4) was #1 and The Cosby Show (September 27: Goodbye, Mr. Fish (episode 2), rating 22.5) was 3rd.
October 3, 1984: Pre-empted for American League Championship Series. Dallas (October 5: Battle Lines, rating 24.7) was #1 and The Cosby Show (October 4: Bad Dreams (episode 3), rating 21.9) was 5th.
October 10, 1984: The Mortgage, rating 25.1, 5th for the week. Finished ahead of Dallas (October 12: If at First You Don’t Succeed, rating 24.0, 7th) and The Cosby Show (October 11: Is that My Boy? (episode 4), rating 20.6, 9th).
October 17, 1984: Fallon, rating 26.1, #1. Dallas (October 19: Jamie, rating 24.6) was 2nd and The Cosby Show (October 18: A Shirt Story (episode 5), rating 21.3) was 7th.
October 24, 1984: The Rescue, rating 26.3, #1. Dallas (October 26: Family, rating 25.9) was 2nd and The Cosby Show (October 25: Breaking with Tradition (episode 6), rating 21.2) was 8th.
October 31, 1984: The Trial, rating 24.9, 2nd for the week. Finished ahead of The Cosby Show (November 1: One More Time (episode 7), rating 20.0, 8th). Dallas (November 2: Shadow of Doubt, rating 27.1) was #1.
November 7, 1984: The Verdict, rating 25.7, 2nd for the week. Finished ahead of The Cosby Show (November 8: Play it Again, Vanessa (episode 8), rating 21.2, 7th). Dallas (November 9: Homecoming, rating 26.2) was #1.
November 14, 1984: Amanda, rating 23.5, 5th for the week. Finished ahead of The Cosby Show (November 15: How Ugly is He? (episode 9), rating 22.5, 6th). Dallas (November 16: Oil Barons Ball III, rating 26.5) was 2nd.
November 21, 1984: The Secret, rating 24.3, 3rd for the week. Finished ahead of Dallas (November 23: Shadows, rating 22.6, 5th) and The Cosby Show (November 22: Bonjour Sondra (episode 10), rating 16.7, 18th).
November 28, 1984: Domestic Intrigue, rating 25.2, 3rd for the week. Dallas (November 30: Charlie, rating 25.9) was 2nd. The Cosby Show was a repeat on November 29.
December 5, 1984: Krystina, rating 25.3, #1. Dallas (December 7: Barbecue Five, rating 24.7) was 3rd and The Cosby Show (December 6: You're Not a Mother Night (episode 11), rating 23.1) was 4th.
December 12, 1984: Swept Away, rating 26.5, #1. Dallas (December 14: Do You Take This Woman, rating 25.2) was 2nd and The Cosby Show (December 13: Rudy’s Sick (episode 12), rating 21.3) was 6th.
December 19, 1984: That Holiday Spirit, rating 25.9, #1. Dallas (December 21: Deja Vu, rating 23.0) was 4th and The Cosby Show (December 20: Father’s Day (episode 13), rating 21.7) was 6th.
December 26, 1984: Pre-empted for a rebroadcast of Malibu. Dallas (December 28: Odd Man Out, rating 24.5) was #1. The Cosby Show was a repeat on December 27.
January 2, 1985: The Avenger, rating 26.2, 4th for the week. Dallas (January 4: Lockup in Laredo, rating 26.3) was 3rd. The Cosby Show was a repeat on January 3.
January 9, 1985: The Will, rating 27.7 (season high), 2nd for the week. Finished ahead of The Cosby Show (January 10: Independence Day (episode 14), rating 25.4, 3rd). Dallas (January 11: Winds of War, rating 27.8 (season high)) was #1.
January 16, 1985: The Treasure, rating 27.0, 4th for the week. The Cosby Show (January 17: Physician of the Year (episode 15), rating 27.9) was 3rd. No Dallas on January 18.
On a win-loss basis, Dynasty pre-Super Bowl was 7-7 vs. Dallas and 11-2 vs. new episodes of The Cosby Show. Notice that the pre-Super Bowl episodes are bookended by the losses to The Cosby Show. Dynasty pre-Super Bowl 15 episodes average was 25.5. Dallas pre-Super Bowl 16 episodes average was 25.3.
Post-Super Bowl
January 23, 1985: Foreign Relations, rating 25.0, 3rd for the week. Dallas (January 25: Bail Out, rating 26.1) was #1. The Cosby Show was a repeat on January 24.
January 30, 1985: Triangles, rating 27.0, 2nd for the week. Finished ahead of Dallas (February 1: Legacy of Hate, rating 26.2, 3rd). The Cosby Show (January 31: Jitterbug Break (episode 16), rating 27.8) was #1.
February 6, 1985: The Ball, rating 25.9, 2nd for the week. Finished ahead of Dallas (February 8: Sins of the Fathers, rating 25.0, 4th). The Cosby Show (February 7: Theo and the Joint (episode 17), rating 26.1) was #1.
February 13, 1985: Circumstantial Evidence, rating 23.4, 5th for the week. The Cosby Show (February 14: Vanessa’s New Class (episode 18), rating 26.6) was #1 and Dallas (February 15: The Brothers Ewing, rating 25.0) was 2nd.
February 20, 1985: The Collapse, rating 24.6, 4th for the week. Dallas (February 22: Shattered Dreams, rating 25.8) was #1 and The Cosby Show (February 21: Clair’s Case (episode 19), rating 25.1) was 2nd.
February 27, 1985: Life and Death, rating 24.8, 2nd for the week. Finished ahead of Dallas (March 1: Dead Ends, rating 22.6, 7th). The Cosby Show (February 28: Back to the Track, Jack (episode 20), rating 27.0) was #1.
March 6, 1985: Parental Consent, rating 24.0, 3rd for the week. Finished ahead of Dallas (March 8: Trial & Error, rating 22.4, 6th). The Cosby Show was a repeat on March 7.
March 13, 1985: Photo Finish, rating 24.2, 2nd for the week. Finished ahead of Dallas (March 15: The Verdict, rating 22.7, 5th). The Cosby Show (March 14: The Younger Woman (episode 21), rating 28.3) was #1.
March 20, 1985: The Crash, rating 22.6, 3rd for the week. The Cosby Show was a repeat on March 21. No Dallas on March 22.
March 27, 1985: Reconciliation, rating 23.1, 5th for the week. Finished ahead of Dallas (March 29: Sentences, rating 23.0, 6th). The Cosby Show (March 28: The Slumber Party (episode 22), rating 30.1 (season high)) was #1.
April 3, 1985: Sammy Jo, rating 23.1, 3rd for the week. No The Cosby Show on April 4. No Dallas on April 5.
April 10, 1985: Kidnapped, rating 24.5, 2nd for the week. Finished ahead of Dallas (April 12: Terms of Estrangement, rating 22.1, 6th). The Cosby Show was a repeat on April 11.
April 17, 1985: Pre-empted for a repeat of Hotel. Dallas (April 19: The Ewing Connection, rating 21.1) was 5th. The Cosby Show was a repeat on April 18.
April 24, 1985: Pre-empted for 20/20. The Cosby Show was a repeat on April 25. No Dallas on April 26.
May 1, 1985: Pre-empted for Miss Hollywood ’85. The Cosby Show (May 2: Mr. Quiet (episode 23), rating 25.5) was #1 and Dallas (May 3: Deeds and Misdeeds, rating 21.4) was 3rd.
May 8, 1985: The Heiress, rating 21.9, 3rd for the week. The Cosby Show (May 9: Cliff’s Birthday (season 1 finale), rating 24.1) was #1 and Dallas (May 10: Deliverance, rating 22.6) was 2nd.
May 15, 1985: Royal Wedding (season 5 finale), rating 25.9, 2nd for the week. Dallas (May 17: Swan Song (season 8 finale), rating 27.5) was #1.
On a win-loss basis, Dynasty post-Super Bowl was 7-5 vs. Dallas and 0-8 vs. new episodes of The Cosby Show. Notice that there were no #1 episodes post-Super Bowl. Dynasty post-Super Bowl 14 episodes average was 24.3. Dallas post-Super Bowl 14 episodes average was 23.8.
At the end of the season, Dynasty was #1, Dallas was 2nd, and The Cosby Show was 3rd.