Online isn't as good as MW2, having to unload over half a magazine in each opponent. Snipers are unbelievably nerfed. Can't play hardcore until a higher level and grenades are effected 20x more by gravity. :/
Among other news....
Contracts aren't bad, I like being able to buy whatever attatchments I prefer, and I like to sabotage my opponents by creeping up behind them with my stealth perks.