My take:
AWA @ Rosemont, IL – Rosemont Horizon – January 10, 1986 (13,000)
Steel Cage Match: Crusher Blackwell & The Road Warriors d. The Fabulous Freebirds
Cage matches always drew better than usual numbers in the AWA, and this one was no different.
AWA @ Chicago, IL – International Amphitheater – February 23, 1986 (7,000)
AWA World Heavyweight Title: Stan Hansen © battled Sgt. Slaughter to a no contest
Slaughter's first match in Chicago vs. Hansen, people would not have bought Slaughter winning the title on his first crack there, IMO. Road Warriors vs. Irwins would have been a huge let-down after the Freebirds blow-off cage match.
AWA @ Rosemont, IL – Rosemont Horizon – March 23, 1986 (5,500)
The Road Warriors d. Nord the Barbarian & Boris Zuhkov by DQ
AWA World Heavyweight Title: Stan Hansen © d. Rick Martel by countout
Nord and Boris was a decent team but Boris was a midcard guy in the fan's eyes so that wouldn;t have been a "drawing" matchup. Martel getting a rematch against Hansen has some intrigue, but I think the fans were tired of Martel by this point and most probably didn't see him regaining the title...and, like the Slaughter match, not in their first rematch in the city.
AWA @ Rosemont, IL – Rosemont Horizon – April 27, 1986 (1,800)
Brad Rheingans d. Col. DeBeers by DQ
The Midnight Rockers d. Buddy Rose & Doug Somers
Sherri Martel d. Candi Divine by DQ
AWA World Tag Titles: Scott Hall & Curt Hennig © d. Bill Irwin & Ryuma Go
Catch Wrestling Rules: Larry Zbyszko d. Scott LeDoux
Bruiser Brody, Nord the Barbarian, & Boris Zuhkov d. Greg Gagne, Mike Rotundo, & Leon White
AWA World Heavyweight Title: Nick Bockwinkel d. Stan Hansen © by DQ
Bockwinkel challenging Hansen would also have been a let-down. a Martel or Slaughter rematch with a stip would have done much better. The rest of the card are mostly names that became prominent in the territory later on (Ryuma Go, Rose & Somers, Rockers, White), but would have had a "Who???" quality to them that might have hurt attendance. The April card, if you were needing to skip one of that bunch, is the obvious choice going by where everyone on it was in their development and placement in the tiering of stars.
I assume Go is replacing Scott Irwin and Rotondo and White **may** be subs for the LOD, going back to the LOD vs. Nord and Boris matches. IF they annoucned the replacements ahead of time, it wouldn't have helped sales much.
Plus people probably thought Brody would no-show.