When will they ever learn.. Screenshots have never been a good indication of how a game will look. Does anyone remember the GTA4 vs Saint's Row 2 comparison? Based on the screens you could make a reasonable case that Saint's Row 2 could hold its own against GTA4. But when we saw the game in full motion it didnt look nearly as good.
I own a 360 and it would be nice if they could actually pull off what they've shown us on those screenshots (as then future games that I actually want to buy might also look as good) but I doubt it will look anywhere near as good as on the screenshots.