LOL! Yea right, 20 hours for a GOW game? By casual they must be talking about people who are picking up a controller for the first time and suck at the easiest of puzzles. 10 hours for veteran gamers, I'm pretty sure that's either getting all of the weapons upgraded, finding all the gorgon eyes/feathers or 2-3 hours longer than it would really take (still, 7 hours of GOW gameplay is just as good as any other game IMO).

But if you're casual, you would just play through the game, and ignore Gorgon Eyes, Trophies, etc.

10 hours is still long. And I tend to take a bit longer than average (Chains of Olympus took me 7 hours, and most other people 5 hours), so that's a good length.

blood style in the new trailers, looks very close to uncharted 2 train scene.