Game sucks and is over-rated.
Only good thing is that it has 256 players supported. But that is just a gimmick. No one on the PSN is even using a headset so most of the time you see idiots running around like head-less chicken. Not only that, but the game also has some bad lag. Unless you are a Sony fanboy to the extreme, don't pick this garbage up. This game will hardly last a month.
Just wait for Bad Company 2, which is vastly superior. Bad Company 2 beta> Full game of MAG.