I'd vote them all different according to campaign/multiplayer experience/maps/bonus content.
But overall I'd have to say mw2. Best campaign IMO, core multiplayer experience hasn't changed much across all of them, and the extra content (zombies, spec ops, extinction, survival, squads) each have their own ups and downs. --- My car is actually a transformer... he's just kinda shy
CoD2 > WaW > 1/3/BRO/FH (all pretty much the same, in a good way) > BO1 > BO2 > MW1/MW3 >>>>>>>>>> MW2
I'm not sure where to place Ghosts yet, but it'll probably be between BO1 and BO2 when I'm done figuring everything out. --- True Christianity is a lifestyle, not a religion. Learn it; live it. I think I'm indecisive, but I'm not sure. Brubalities are the future of Mortal Kombat.
MW2 and it's not even close. It was balanced because everything was powerful, and it was fast-paced, exciting, and fun. Everything else has been a snooze-fest since. --- Chicago Bears 2013 Record: 6-10 LORD McCown stat tracker: 120/184, 1461 YDs (65.2%, 7.94 YPA), 9 TDs, 1 INTs, 103.6 rating