Specialguy: Xenos Transistor count is 232 million for the GPU and ~100 million for the daughter die with ROPs and 10MB eDRAM or around 332 Million for both, the ~500 million transistors I believe is counting Xenon, the CPU.
Wii U's GPU with 35MB eDRAM is ~975 Million, only the ~750 Million when you are looking at just the GPU parts and number is based on AMD's GPU transistor density afaict.This is one of the reasons I doubt we have seen anything from Wii U's GPU yet.
It is also one of the reasons I find 160ALUs to be a bit crazy, I mean if you want to talk about custom ALUs, those that are 90% bigger than R800, means that is it certainly extremely over the top custom, which is why I don't think we are looking at 160ALUs, also even with Flipper along for the ride, that is only 26million transistors for the entire GPU minus the eDRAM for that chip. Which should point to more going on than some R700 ALUs which are smaller than R800 ALUs + some TEV logic for backwards compatibility, that isn't a well thought out idea, it's just pandering to the lowest possible specs.
As for Wii U not yet exceeding 360, ports are historically locked to their lead platform and Wii U has other issues to convert the game to play nice, such as different memory architecture and a CPU that can't do what Cell or Xenon could. It does more of other stuff that might be more useful once the GPU is utilized for GPGPU functions, it's impossible to get a performance level from the Wii U off of Nintendoland and that is the only ground up title I think Wii U has seen. I might be wrong, but I assume future games will look a lot better.