PS3 version: It is possible to mix and match online and offline players for scramble battles and pair play battles. Two local players can play on the same PS3 using 1 PSN ID, and play against other players online. 360 version: It is NOT possible to mix and match online and offline players for scramble battles and pair play battles. So you either have to have all players be offline and local (so 4 players, 1 xbox) or have all the players be online (4 players, 4 xboxs).” The reason for this difference is because of the architecture differences between gamertags and PSN IDs. I’m not sure of the technical details, but basically it amounts to: Sony made it so you can mix and match online and offline, and Microsoft made it so you can’t.”