Actually you don't know what you are talking about. These screens on my monitor are bigger then the entire vita... how is that not misleading?
There's nothing stopping anyone from viewing these shots on a Vita or similar sized screen. People trying to paint these screens as wrong/misleading don't know what they're talking about.
Yes this is the resolution the vita is running the game at, actually, it's even worst then that since these screens clearly show the game is using subnative resolution, but when seen on an actual vita, since the pixel density is much bigger it gives it a super sampled look, making what you see actually much better.
Eitherway it looks awful, it's like they were doing it for PSP and just decided to do a quick port.