MW2. It's more dramatic than MW3. In MW3, you do not know what happens to Sgt Foley, Cpl Dunn, and the other guy I forgot. Also, MW3 ended it's own series, as Infinity Ward stated.
Mw3 pros for me: Got insanely good, joined amazing clan, had lots of fun pub stomping everybody and I really loved survival mode. Loved the introduction of the specialist package and kill confirmed in mw3. Mw3 cons for me: Deadmans hand, I missed out on probably about 70 moabs because of that bloody deathstreak, maps weren't very good apart from Mission, Dome, Hardhat and Bakarra, the bloody pp90m1 -_- anyone could use that gun without a fraction of skill and pull of a high killstreak it was a spraying machine. There were a select few OP guns and the rest were just rubbish. Mw2 pros for me: I was still a complete noob then :3 and we all know CoD is a lot funner when your a noob because you just don't care! Had some mean times playing with Irl mates, we were all constantly cracking up with laughter. Intervention <3, most of the maps were amazing. Mw2 cons for me: Painkiller -_- ughh drove me nuts, noob tubing otherwise known as a grenade launcher. So overall for fun and noobs Mw2 :3 For playing serious Mw3.
I like MW3 but 2 also rely good, they both have good graphics but mw3 has a better multiplayer and storymode :) ;)
Mw2 is totally nostalgic, it's not like in Mw3, that the story, you know how it's going to end. Mw2 was a perfect game, but it had many hackers. ( Including me. :3 )
So you were the person i was playing with a month ago who kept calling in those ac-130s. Nah im just jking but even if you were hacking I could still beat you till you were dead. I am the best.... Want to play me? Gamertag is " MrFly1ngP4ncake....Come at mebro(xbox also)