Well you need to remember if it's too different then it wouldn't be Call of Duty, COD2 and COD4 worked well and were popular, so they've kept the good aspects of those games, if they completely changed it people would be far more pissed off than they would be if it was exactly the same. But on the flipside it's different enough from previous titles due to the new game modes, Create a Class 2.0, and the introduction of more obscure weapons.
Bookmarks