Statistica puts CoD 4 at 20M units, MW2 at 25M units, and MW3 at 31M units [0]. You must also consider the environment. 2009 was a FPS deadzone. There was MW2,

Statistica puts CoD 4 at 20M units, MW2 at 25M units, and MW3 at 31M units [0]. You must also consider the environment. 2009 was a FPS deadzone. There was MW2, World at War, Resident Evil 5, Left 4 Dead 2, and Borderlands. 2007 had a TON of superb titles including CoD 4, Halo 3, Crysis, Bioshock, Half Life 2/TF2/Portal (Orange Box), S.T.A.L.K.E.R, Quake Wars, and probably a couple I'm forgetting. Given that difference, MW2 sales being just 20% higher is not that great. The worst aspect of console CoD 4 and MW2 was grenade spam and the second worst issue was win more killstreaks. Both of these vastly outran any map issues. The only bad map I can recall was the one with all the shipping containers, but that was because it was miniscule. I used to play a LOT of hardcore search and destroy (with perk, grenade launcher, and killstreak limits -- yay custom PC servers). I don't remember any situation where having fast reflexes wasn't by far the most important thing along with hitting the max FPS (140 FPS?) so you could jump farther (I can't remember if this was fixed in MW2). Maybe it was different for other people though. [0] https://www.statista.com/statistics/321374/global-all-time-unit-sales-call-of-duty-games/ https://www.statista.com/statistics/321374/global-all-time-u...