I've been able to play both PC and 360 versions.
on my PC, i ran all settings maxed, at 1920x1080.
The games graphics look dated on PC, and most envirotmental textures looked pretty subpar. I was using a wired 360 controller on PC, so I didn't encounter any of the keyboard/mouse bugs, not video card issues people were reporting.
HOWEVER, on the xbox 360.. its a completely story.
I guess the game was made with console in mind... the graphics look as good as anything else out on the console market, the game runs flawless, and even enviorments and details at 1080p look amazingly well. The low-res textures don't seem to be apparent, and the fx of really seem to make a better looking game... such as blur and depth of field.. it really makes those background trees, plants, rocks, etc look very nice... masking their low-res nature very well.. I'm not seeing alot of those same FX as great on the PC. Even lighting on the console appears better an no apparent issues. The foliage textures don't seem nearly as 2d.
and even load screens/scenes feel normal.. they dont just skip or seem too fast as they do in PC
just a thought