It's funny.
I can see both the Xbox 2 and PS3 failing miserably if Nintendo's controller is revolutionary. If it's very fun, easy to play, and it allows for conventional games to do things that just weren't possible before....then I dub Nintendo the winner come this year's E3. Plus, I'm glad both companies are going for the same market share, and even in the same way. It's just less competition once the Revolution comes out.