HD4400 :

HD Graphics 4200, 4400, 4600, P4600, P4700 – GT2, 20 execution units, up to 432 GFLOPS at 1350 MHz

https://communities.intel.com/message/254122

And we got Wii U numbers from chipworks teardown, you can google B3D or Neogaf analysis

160ALU/176GF

EDIT : 

https://forum.beyond3d.com/threads/wii-u-hardware-discussion-and-investigation-rename.51528/page-250#post-1582826

I don't know why you took it a lot further that it was meant to be,  I was just asking if you were sure it's easier to port games on xbox than ps4 since most of the games on ps4 runs and looks better than xbox and when you find a game that runs better on xbox, it's because it ran at a lower resolution, that's why I said, maybe both are equally easier to port.  it has nothing to do with which one is more powerful, heck I never included Wii or Wii U in the conversation.

I don't see gamers backing many kickstarters in the future if this version of the game never shows up.

the wii us gflops are just estimated. its impossible to give accurate numbers but it should be something between 350 and 450 gflops.

intel hd 4400
http://www.heise.de/newsticker/meldung/Intels-Broadwell-Grafik-Schneller-und-effizienter-Angriff-auf-AMD-2390225.html
website is german though.

"HD Graphics 4400 hat nur 20 EUs, die aber mit 1100 MHz laufen und 352 GFlops packen – allerdings liegt dessen TDP bei 15 Watt."

The wikipedia thing is meant to all the gpus, the most powerfull is 432 gflops. not the 4400

Sorry I forgot :P. Its because it practially has everything a desktop PC has. Direct X 11, a windows like OS, and similar hardware. And I think DX12 will make it easier, though I can't guarentee that.

To be fair, first party games are optimized to one platform plus  have all the support from the parent company.  It's reasonable to expect better result from first party games. 

Now we are on the same channel.  I still believe both will look equally later on as developers get use to both platform.  The difference will come from exclusives.

The wii u gpu (radeon part) is either 176 or 352 gflops according to the strip down however there is also the original wii gpu in there and other elements to support wii compatibility. The fact is the wii u gpu is on a cheap 40 or 45nm fabrication process but is not consuming enough power to be 352 gflops so its highly likely to be 176 gflops but that still means its far superior to the 360 as there are many generations of improvement, improved feature set and 32MB of blisteringly fast memory available. Whatever it is 176 or 352 gflops no one is claiming the wii u gpu isn't superior to ps3 and 360.

The big issue is the cpu, we know its a triple cpu identical to the original wii cpu but running at 1.25ghz. It's a basic 32bit risc processor from the last century and doesn't compete in performance with 360 or ps3 because those consoles while having slightly less performance by mhz run their cpu's at 3.2ghz not 1.25ghz and so its an easy win for them. 

That brings me around nicely to my final point and that is Project Cars is clearly a racing game with very high cpu requirements because they are taking car simulation to a higher level. This is where the wii u is poor. You can't just downgrade the wii u's graphics to 480p and sort it because the wii u simply hasn't got the cpu resources to run the game. It seems likely to me that the wii u gpu is probably fit for purpose but the cpu can't cope. The ps3 and 360 probably can't run it due to memory requirements and the wii u can't because of cpu requirements. 

The wii u version may have happened if they hadn't abandoned the ps3 and 360 versions. Then all 3 powerpc consoles could have justified development. Yes it would have been simplified to the weakest part of each console but it could still have been a enjoyable title for those 3 consoles.

It never made any commercial sense to just release it on wii u in addition to all the x86 versions.

Wii U owners maybe?

Gamepad functionality on the NX confirmed!