Pacther is using a different definition of video game "generations" than we at VGChartz are, isn't he? We look at it from when it releases, he views it from a technological point of view. He's said that the PsP was a generation ahead of DS, and considers the Wii to be a 6th generation machine.
That view is something I disagree with, but considering that he views it from a technological standpoint, saying it isn't quite a next generation machine isn't that stupid.
The rest of what he says about the WiiU seems correct (although a bit obvious).