This means nothing until the full architecture is revealed.
It is all about the GPGPU and the embedded RAM.
For example:
According to Tom's Hardware the thing to bear in mind when building a budget gaming PC.
A dual core 3.2Ghz CPU with slow RAM and decent graphics card with fast memory is superior to a six-core 3.2Ghz with fast memory but shitty graphics card.
All said and done the wii u is a budget console when you think of what you are getting for the money.