So obviously I am most certaintly not getting it. In fact I never played CoD except for once and hated it, so I will not buy it to just have a bad experience with a horrible redundant game.
Don't argue with idiots because they will drag you down to their level and then beat you with experience.
2007 - Call of Duty 4 (Starting point)
2008 - Call of Duty: World at War
2009 - Call of Duty: Modern Warfare 2 (New engine, is somewhat good game)
2010 - Call of Duty: Black Ops (Uses the CoD4 engine)
2011 - Call of Duty: Modern Warfare 3 (Uses the MW2 engine, actually looks uglier from gameplay videos)
My point... Same gameplay, same weapons, new perks, old perks, new maps, old maps, and nothing new that is exciting.