In a year, the other consoles and PC will be so far ahead, that cannot be considered on the same level.
This is just a semantics game. People who claim the Wii U is next gen are just talking chronologically, whereas the rest of us consider the term "next generation" a qualitative statement to define a technical advancement.
It is part of the same console generation as the PS4, but it isn't part of the same technological generation.
Um, what the fuck are you talking about? Please provide examples, because implying the Wii competed with the 360 and PS3 is wild revisionism. It didn't and from a multiplatform perspective, failed misrably. The success is always with Nintendo first party, which cannot be compared with the competition.