I play it on PS3 how is the DS version?
It's way different.
Multiplayer- have you ever played mw2? Lots of noobtubers and rpg's, there is no flak jacket and they are really overpowered. You can have any secondary weapon you want. Though sometimes you'll find matches with people that disabled noobtubes.
Anything to do with Nintendo is GAY to the absolute limit. (Sony Rules)