The blocking in general you mean? Run some stretch plays where the WR has to seal the outside and you'll see what I mean. As far as double teams go, they're technically there, but IMO they still need a lot of work.
For starters, it's just a random animation and doesn't seem to have anything to do with scheme or the personnel you're facing. Also, from what I've seen they never even try to lock a defender down. You'll occasionally see two linemen on one defender, but it's very brief and to me looks ineffective. It's nothing that would make a 3-4 with a dominant NT as realistically effective as it should be. Whereas no double and he's creating a bull rush and disrupting the pocket. With a double he frees up his LBs to hit an open gap. I don't see that type of double team going on in the game.
Look at the first highlight here of Casey Hampton
http://www.youtube.com/watch?v=VZu62TSVnBo
That's not something you see in game.