The Wii U is, so far, a huge failure, probably for many different reasons (the name is a big one), but one of the main reasons is likely the poor specs, it's just slightly faster than the old Xbox 360 and Playstation 3.

If it were a "real" next-gen console with specs similar to those of the upcoming Xbox and Playstation, instead of just essentially being a last-gen console with a fancy controller, a ton of people would care.