If developers make a multiplat game for Wii U that uses the features the controller offers, it would not be much of a hassle to offer the same features for the PS3 / Vita, regardless if the PS3 owner has a Vita or not, they have done the work anyway and if it is a multiplat, then they have to do a version without the features too, for the 360, so i guess the PS3 will get the best of both worlds again. although i hardly think this is going to happen a lot.
Besides, if i own a PS3 and a Wii, and had to choose what to get to play the game with this features, a Wii U or a PS-Vita. i would know what i would get 
“It appeared that there had even been demonstrations to thank Big Brother for raising the chocolate ration to twenty grams a week. And only yesterday, he reflected, it had been announced that the ration was to be reduced to twenty grams a week. Was it possible that they could swallow that, after only twenty-four hours? Yes, they swallowed it.”
- George Orwell, ‘1984’
