Ah. Yeah, I can understand it then. A store could sell a controller like that without ever knowing it had a flaw since the flaw is too minor to be present in all games.
Case in point, my first 360 controller. The control stick is worn enough to where the stick leans a bit off-center. On most games this might occasionally cause a character to walk slowly in that direction, and wasn't even remotely problematic when playing since my finger is on the stick when I'm playing. It didn't affect any of the games I own, HOWEVER, my friend brought over Morta Kombat one day and when he started that game with my controllerm the menu cursor freaked the hell out. XD
I guess you can at least use it for those other games. But yeah, that controller's legit.
