Let's be honest: that's a pretty solid lineup for the launch of a console. Are some of them multiplatform and have been out for a bit? Yeah, sure. At the same time, they are big games to have on the console at launch. It will help ease in their online play and find issues with it, gives RPG players a few things to toy around with, and generally appeals to multiple demographics. It's a smart move.
The hardware is also much cheaper than we honestly expected, and while people can say "it's going to crash and burn", the same was said for the Wii...and it thrived on last-gen tech.
I want a Wii U. I won't be getting it launch day, but I will be getting it within the first year of production.