The game itself seems okay, but the menus are very buggy, like when you choose a character, even if you have one controller connected there are still four "press X" prompts on the other three doors. In other versions, those doors are boarded up until you connect a controller. When you complete the Daily Challenge, the option on the menu doesn't turn red as it does on Steam. Not really major things.
The loading is more of an issue though, it takes about twice as long to get to the start menu as it does on 360 and Steam. Every time you complete a run, it takes ages to save it, so whereas on 360 and Steam you can restart instantly, you have to sit around on PS3. It just appears to be very poorly built, is all.
Like I say, it doesn't effect the actual gameplay so you'd definitely be fine with it if it's the only option available to you, but the Steam version is superior, and the 360 version would be too if it weren't for Daily Challenge. (I forgot 360 didn't have DC when I said PSN was the worst version, it is the worst technically.)