NGSP was a port of a remastered Xbox game. However NG2 originally came out for the 360 and Sigma was an "enhanced" version. Even if it runs on 30fps (at an early time in the vita's time span), expected some PS3 quality experience from the Vita.
If the games look terrible, like Black Ops Declassified, it's purely due to the devs.
Or they could half-ass it and not bother optimizing it for the Vita outside of touch gimmicks. We'll just have to see, I guess.
As long as it has a consistent framerate at 30fps or above, I'll be happy.
^ This is what I'm hoping is sorted out. Sigma plus ran fairly well on the vita, but sigma 2 demands alot more, the animation is faster, the graphics are better, there are potentially more enemies on screen, more UT effects....
It has me wondering how this port will do. I hope it's actually a quality port.