That's a bit unrealistic.  PS3 has an 8 or 9 year old GPU - which is just now being matched/passed by this Tegra K1 according to this announcement, which should be taken with a good pinch of salt.  Generally the processing power has increased at a good clip but memory bandwidth lags in mobile.

The DX levels over time was there to show how same tools and engines couldn't hit PC, Console and mobile last time around. However this time PC, consoles and mobile will be on the same level within a year of each other.

Not the most relevant of data but effective visuals...

wait, so UE4 runs on this but they claimed the WiiU can't handle it?

Height on that chart was arbitrary or meaningless.

They're saying UE4 is DX11.1 (while the Wii U has a DX11.0 GPU). It's not a significant difference between 11.0 and 11.1 so Wii U should be able to run everything.  There's a difference between capable of running, and it running well of course.

It depends how CPU dependant these engines are. The Wii U has the RAM. Its GPU "should" be capable, but the CPU seems to be a real issue, lowly clocked, and with a few cores. That aside there's the issue of financial incentive.

I'm really looking forward to see what AMD has to offer.
Cloud servers is one of my bets

So much power just to play Angry Birds

Unreal Engine 4 runs on Wii U and Epic themselves have said that. Google it.

They just don't do it, because Nintendo.

Apple forced Nvidia's hand with this one.