A 540p Vita screen looks as good as 1080p. Why? Because of the screen size. If the Vita had a 55' screen, then of course it would look horrible on a 540p resolution. Even the 240p 3DS screen looks beautiful, specially the smaller screen of the OG 3DS. I always find cell phones with a 1080p screen a rip off. In my opinion, it doesn't make the display looks better, because it is already tiny enough(maybe that's why they are making phones' displays bigger these days). Instead all it does is make the text smaller and harder to read. Only big tablets really benefit from HD resolutions.