Okay, you're right, I am just pulling this info out of my behind....Look, I am not going to argue about this, they are both great looking games and it will be great if they run good on 360. What else can I say?
First, I'm pretty sure (not entirely) that screenshot of Alan Wake is from a pre-rendered cut scene.
And Crysis could run on a 360, but there's no way it could run it on max specifications. You would need a really high end gaming PC to get good performance when Crysis is maxed out, and even then there are still problems. The 360 could do it if the graphics were downgraded a bit.