Aerosmith mostly, a couple others less so, but still noticeable. Leveling aside, I felt the games I played weren't really PAPA Circuit caliber. Drac had an issue with balls flying off a habitrail and draining. Flintstones just felt loose & sloppy overall. Playable, but meh. I realize you're mostly at the mercy of whichever games people choose to bring. It is what it is.
Apparently the vast majority of competitors were happy, so don't sweat one person's opinion. I'm not the kind of tourney player who's driven to compete whether I'm having fun or not, so I decided to have fun wandering the show floor, playing dollar games with friends, etc.