Almost two years on from Gears of War, it's no surprise to see how well the 360 handles Unreal Tournament III. So capable is Unreal Engine 3 at this stage, the console copes admirably even when chaos is absolutely raging on all sides - at least on the majority of occasions. There are a few slowdown hiccups on now and then, and is some very minor screen-tearing during cut-scenes. But there's absolutely no texture pop-in to speak of, and a wonderful array of lavishly detailed environments to explore unfettered - something the PS3 struggled with even when you installed the game to the hard disk.
http://www.eurogamer.net/article.php?article_id=165879&page=2
So ... more evidence for this thread I guess
http://www.vgchartz.com/forum/thread.php?id=31469