VSC.D-Torr
Smash Hero
You can't compare Infiniti Ward COD games (the MW series and COD2) and the Treyarch CODgames (the rest). There are a lot of people who play Black Ops that don't play MW2, and vice-versa. Main reason MW2 online still exists. While COD comes out every year, the next installment for each particular game comes out every 2 years.