It all depends on the source graphics.
If it was made in 780 or worse, in 480, it will look crap when blown up to 1080 (either i or p) without some kind of decent post processing (an upscaler)
for example, take a native 640x480 pic and blow it up to 1900x1080 and see the blocky pixels.
Shrinking a native image from 1900x1080 down to 640x480 will make the pic smaller but will still look ok
Games and video i'm pretty sure work the same way: take an SD game and blow it up to 1080 and it will look shitty without an upscaler unless you're using a smaller HD screen
But also, taking an HD game (like GT5p for example) and putting it on a SD screen is also not a good idea, as the game was designed in HD in the first place, the image will look crap at best and unusable at worst for playing games. An HD still image picture being downscaled to SD won't make much of a difference, but you might lose the sides of the image or something like that
Bottom line i guess is if you have an HD screen and are picky about graphics, only get games designed for HD otherwise you'll be disapointed when the graphics come out as a blurry mess...
so for me, 1080p for the win if i can get it.
Proud Sony Rear Admiral
