Omg... I really don't like IGN now. They are so biased towards reviews. They gave a 10 for sound on Modern Warfare 2, but BFBC2 was so much more realistic and only got a 9.
They also docked points off this game because it was too short and more linear than the first game. I mean seriously... MW2 was an hour shorter [IGN says the BFBC2 was 6 hours long in campaign], also there's a more open wide world in Battlefield then in Modern Warfare 2. Also they could have said the bad points about Battlefield the same on Modern Warfare 2. Short, didn't hit that "epic" feeling.
And also in the video review, the reviewer talks about how when he joins games, they finish right away. That shit always happens in Modern Warfare 2 and Battlefield has better servers.
Sorry, I'm just mad :|.