Still. Don't take IGN reviews as the holy grail master reviewers. They are bought out by a lot of publishers to slate reviews in their favor. Caring too much about reviews is pointless, even if it is good. If you like it, you like it.
Where is le evidence of this?
I don't have evidence. Who needs that when you can blindly believe what I say?
But seriously, it's just my belief. It doesn't sound too out of the ordinary really. It seems like Activision will always nudge IGN to give call of duty games great reviews. it makes sense right?