I'd give the MS show a C+.
I think Dead Rising 3 looked great. While the premise may be mundane, it showed what the power of next gen can do for open world games. A zombie game with literally thousands of zombies, not just 3 or 4 on a street corner.
The problem was most of the exclusive games didn't look that interesting and there were a lot of games that looked this generation. Certainly not games worth spending half a grand on a machine for.