Well theres many more players on 360 so its probably more common to run into noobs. Its cheaper to and that results in having alot more crappy kids. I've found that theres alot more casual gamers in general on the 360 compared to the PS3.
Ill be buying in the next hour and then setting my gamertag and posting it here. I had the blade and blue eyes on the ps3 version. I'll have a mic and all dlc. Hopefully you guys are a better community than the kids on the ps3 boards
360 users are better at zombies, PS3 users are actually harder in multiplayer (I think it has to do with far less lag then on the 360 due to netcode being better for the PS3.)