Infinity Ward has told MTV that the reason Call of Duty was dropped from the title for Modern Warfare 2 was because the game is a sequel and not a new campaign.
“This is a direct sequel to Call of Duty 4: Modern Warfare,” said community manager Robert Bowling. “That is what we are trying to get across to our audience. It’s not just another one in the Call of Duty franchise.
“This has never happened in Call of Duty before. They’re typically their own campaigns and totally unrelated to the previous one. This one, is indeed a direct sequel and we just want to make that clear.”
So there you have it.
More through the link.