To all the doubters that the interview was CG, I would suggest that you pick up the latest issue of Edge Magazine either from a big bookstore or off of the App Store on iOS. The cover story is about the Fox Engine and what they are attempting for next gen. After reading it, it is clear that there is a distinct possibility that this interview (Mogren's side) was rendered in Fox Engine.
Also, the cost for making this interview wouldn't be as huge as people in here are speculating due to it being made on existing and improving tech for their game and that this is clearly part of their marketing strategy.
I'm not saying that I'm 100% sure that the interview was done in Fox Engine, but after reading the crazily ambitious plans that Konami and Kojima have with Fox Engine for next gen and seeing some of what they've accomplished so far, the possibility that this interview was done in Fox is absolutely possible.