The rumours and speculation regarding the specs of the Wii U span the entire spectrum, from doom and gloom to the impossibly optimistic. In response to this, Nintendo has said:
We do not focus on technology specs. We understand that people like to dissect graphics and processing power, but the experience of playing will always be more important than raw numbers.
This sentiment is regularly shared via Nintendo, but people have been quick to say that “oh noes, that means the Wii U is really weak!” To be honest though, I think this is just Nintendo being as vague as they usually are. They have a protocol for how they respond to things, and this core belief is part of that protocol.
That said, I do think folks who believe the system will be some insanely technical powerhouse will be let down. But I wouldn’t expect to be spending another six years or so with the equivalent of a Wii.