...I am currently in a league where a team finished with 91 wins and did NOT make the playoffs. Has anyone experienced or been in a league where a team finished with more than 91 wins and failed to make the playoffs?
Yep. I had 92 wins. Tied for the second best record in the league. Lost the division tiebreaker by one run. Lost The WC tiebreaker due to head to head record. Good stuff that.
Okay, just a long time ago, I won 99 games and finished second to a team with 119 wins (+289 run differential). Back then, it didn't matter if you were in the same division; as wild-card, I had to play the 119-win team. I swept them in four games. (I lost the finals 4-1.)