I got both last year (ps3 & xb360)
The ps3 version was soooooooooo slow compared to the xb360. Like the entire game. Menus took longer to access, the game speed was slower, latency in online was worse-in general it was just slow!
I don't have any games for my xb360 - I figured I'd get madden 09 to atleast justify why I have an xbox