http://www.youtube.com/watch?v=YHNWj8HmWwQ
One thing is for certain: You can't blame the bad visuals on the Cryengine 3.
I know it says "Sandbox for Cinema" But I'm pretty it's just a modified Sandbox 3 with better functionality for making in-game cutscenes, and had nothing to do with the real-time visuals. I'll do some research though.