Most people seem to say Uncharted on the Vita is good-looking, but, quite honestly, except for a few moments, it's actually pretty ugly imo. And, holy crap, I swear I must be getting 20 fps at the part I'm currently playing.
This game renders at lower than native resolution, right?
Also, why don't all (three-dimensional) Vita games (that don't have the extra frames for MSAA) use SMAA or FXAA? Both are a really great conservative alternative to hardware anti-aliasing, and, unlike MSAA, they don't butcher the framerate.
I could be wrong, but I believe KZ:M uses one of these post-processing alternatives to real AA.