Personally, I'm waiting for a big budget exclusive game developed from the ground up for the Wii U before I judge its performance; and (most likely) this will be from a developer within Nintendo working on one of their big franchises. Hopefully Nintendo will show off a Metroid or Zelda (or something) on September 13th.
The reason I don't want to judge the system now is the same reason I didn't judge the XBox 360 based on games like Gun

Most of the games we are judging the Wii U's performance by have been developed with the PS3 and XBox 360 in mind, and the Wii U is getting a (relatively) inexpensive port where most of the development resources are (probably) being used to take advantage of the new controls.







