From Eurogamer
And while we're on the subject of grating, let's address the differences between the PS2 and Xbox 360 versions, which hardly flatter the new boy. On PlayStation 2, you can play four versus four online. On Xbox 360, you can play one on one, or two versus two offline (Xbox 360 has no support at all for more than four players on one console, either). On PS2, you can choose from 33 stadiums. On Xbox 360, there are eight. On PS2, you have the PES Shop to work through, unlocking extra bits and pieces. On Xbox 360, there is no shop - you get what you're given. On PS2, the menus allow you to quickly flick between starting eleven and substitutes; to view the scorers during a game by hitting the pause button; to save off replays to your memory card; to edit virtually anything in the game; to play an International Challenge mode, based on World Cup qualifying, and Random Selection matches, where teams are randomly drawn players from a chosen continent (simply brilliant for multiplayer pick-up matches). On Xbox 360, of all of that, all you can do is edit the player names. You can't even save replays, which is just ludicrous - particularly given that the manual actually says you can.