No problem! And nope you aren't paranoid :D
Looking at your match history since I adjusted your rank, I see that you got 1st 3 times, 2nd once, and quit 1 game -- so you must be referring to something that happened in that game.
But anyway, yes -- there are players who still win consistently even against the improved AI on max settings. My goal was to try to create AI that no one could beat and then scale them back to all levels of play (I was unable to make them THAT good, but I got close). The AI have ranks and are treated the same way as players to the matchmaker, so over time, their ranks will settle where they should. And once I make quitting actually adjust your rank, the system will just keep improving over time.
All of this said, I'm going to take a look at how the AI ranks are settling now to make sure that it isn't putting disproportionately good bots in games that it shouldn't.