To be fair here, The Uncharted games on the PS3 all use lower resolution transparency effects as well, and motion blur didn't make an appearance until U2 either. U1 also isn't quite as smooth in terms of framerate and has plenty of tearing.
Besides, the Vita is no PS3.
not to the point that it looks like PSOne level of pixelation like those fire. Some kind of filter would be nice. The frame rate in U1 is miles ahead of this and the mini nuke explotion was beautiful. Though I shouldn't even be comparing between those games on different hardware, this is basing off Golden Abyss by itself.