http://isitgaming.blogspot.com/2013/02/reverse-engineering-reveals-wii-u-to-be.html
A new Digital Foundry article has finally revealed the systems graphical power. The article reveals what most already knew: The Wii U is not a next-generation console. Not in terms of horsepower or technology. In fact Digital Foundry goes as far to say that the PS4 and Xbox 720 will be in an entire different league than the Wii U. What this means is that the Wii U is unlikely to receive ports of AAA 3rd party games such as the next-generation Call of Duty or Assassin's Creed, as it is would be technically impossible to have all 3 versions of the game be on par.
Power isn't the only problem plaguing the Wii U. The unique Wii U Gamepad has also kept some developers from making games for the system as they have said they would like to do something special with the controller.
This news comes after Nintendo has lowered their Wii U sales forecast for the quarter from 5.5 million to 4 million. The Wii U is not performing up to Nintendo's standards and as a result stock prices have been falling. Iwata, the president of Nintendo has recently apologized to Nintendo fans for the lack of game releases for Wii U and has admitted to having troubles with HD development. As a result Nintendo plans many partnerships with Japanese third party companies in order to develop games together.