IF you looked at the images properly you would see that they do compare both consoles at 720p and there is no difference, except for need for speed, that looks better on the PS3

FOR people looking for an unbias comparison check out http://www.eurogamer.net/article.php?article_id=74502&page=5
none of the games looked white washed for the ps3 and you can see them in 720p and 1080p on ps3 and 360. knock yourself out.....
let me know what you think

I think anyone with a brain would agree that EG comparison is a lot more accurate then GS.