Dunno where you got all your hardware faqs for the WiiU but comparing it to PS3 and 360 it looks like it is barely on par for the same system specs.
Of course they all have their own CPU and specific video card but looks like their speeds are pretty much all on par(barring PS3 and its 24,313 processors)
Also people seem to forget the weaker console nearly always wins the console war. Atari,NES,PSOne,PS2,GB,DS,3DS,Wii
2600 was the most affordable and most widely available of the systems available. It was also not the weakest of generation 1. That being said if memory serves the 2600 never actually turned a profit, 5200 was a failure and 7800 was a failure. Oh and every other atari system released... commercial failure...
NES only beat the SMS in Japan and USA. SMS won in South America, Europe, Australia
SNES beat genesis. Genny was released 2 years earlier and used chips from the 70s. SNES had chips designed specifically for it.
PSOne beat n64 because it was supported AND affordable unlike every other system that came out during this generation
PS2 now an established brand and most powerful console until the upstart Xbox was released a year later.
GB-3DS Oh hey look at all those over priced, undersupported and/or weaker handhelds that tried to claw out an existence!
Wii - Uhhhh last gen was a sad 3way tie. Wii being to paraphrase "a tweaked gamecube with motion controls that people still bought gamecube controllers to use", PS3 being a bluray player and 360 being propped up by online gameplay.
EDIT
Also it should be obvious that a slim 360 and a launch 360 will have some different hardware in them. The same for launch and slim PS3 and many of the other minor revisions consoles undergo throughout their life cycles.
Hell i had 2 atomic purple GBCs and you could clearly see(since it was that seethrough gatorady color) that the chips were different.