That was paid sony advertisement. Sony paid them to do a dev diary to talk up the PS4 version, and any business that walks away from free money is stupid.
They won't be porting anything, Wii U version is being built side by side, by a different team. It will look extremely close, and the "polish" they are adding won't change the visuals or the gameplay, they said that all next gen versions look the same, they will play differently on each console, however.
Sonic All Stars was another ported game that was ported on early hardware, and is only using two cores. Most if not all of the ports so far are locked to two cores because they didn't have enough knowledge about the system to optimize it correctly. They did say that the issues were resolved and that they are able to use all three cores now, but those games still do not.
Isnt that crazy though. Its nuts that it can even happen, how in the world can a developer not be aware that they have a third core sitting idle. It actually makes the CPU seem even more impressive, instead of being a weak link, its actually gotta be pretty capable, it runs most of the ports better than the PS3, and comes up just a little shy of the 360. E3 is going to be interesting.