PA had a pretty good strip on it, but I'll just link it because it contained bad language. *grumble* forum rules *grumble*. But yeah, those are evil babies, not your normal run-of-the-mill babies.
As for MW, it was a pretty fun compact experience. The Chernobyl level was awesome, except for the sucktastic end sequence. The whole infinitely respawning thing was really annoying, though. Also, the plane and nuke things didn't do anything for me.
You're still chopping babies in half. Oh sure, they're demonic, but they're still babies.
I just don't feel like playing a game that forces me to murder innocent civilians (although not real) to move on with the story.