"Wii U GPU is several generations ahead of current gen" Shin'en

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ViktorBKK said:
The Wii U architecture is very similar to the Xbox 360.

It's not all that similar. There's more emphasis on memory subsystem management on Wii U, with large CPU caches (3MB versus 1 MB in 360) and a large EDRAM on the GPU (32MB versus 10MB on 360) intended to balance out a lower clockspeeds and main RAM bandwidth.  The GPU and CPU are quite different in architecture too; even ignoring the cache differences, the Wii U CPU is out-of-order-execution compared to 360's in-order-execution CPU, while the Wii U GPU is so weird that even after getting detailed pics the tech-heads still can't work it out.