That means 10 million copies have been sold and more for sure.
lol
Also for many PS3 users especially in NA, they bought a PS3 to play multiplayer games for free especially COD.
Mutliplayer is not great, to many sneak and flank attacks. Cannot have long range battles..
Some maps are pretty nice and fun like in Black Ops, however the maps should be more based on nature rathern then an urban environment.