I know E3 excites the console wars stuff and lots of websites push the notion of "winning" E3, but when you look at it from the point of view of Nintendo, this isn't a smart E3 to win. They've got one console which is dead weight, they've got a handheld that's past its prime, and they've got new systems coming out to replace them. Right now the idea is to not to make the big moves, but to keep the fans happy and loyal and announce some products to help them float on for a bit longer.
This E3 could be really good, but even without Sony, Nintendo probably wouldn't win. Because it's next year that they're going to be going for the jugular.