I actually didn't expect it to be mentioned at all, but World of Final Fantasy looked interesting, so that was a surprise. Plus the Revolver indies, it looked at least reasonably decent.
Either way, Tokyo Game Show is where most of the announces for Vita happen, since it's only doing well in Japan.
Despite that, saying that Nintendo showed Wii U games is misleading. They showed games that everyone knew. It would be the same that seeing Sony displaying RE Revelations 2, SaGA and Digimon. I don't care, I already know that they are coming, so at least Vita had a new game announced.
In the end, the console holds pretty well and get some nice indie games and some AAA Japanese games. People are just too much negative about it. Nintendo usually get a free pass, there are even a bunch of people defending that aberration that's Star Fox Zero on VGC.