I'm surprised the game engine varied that much from Oblivion for it to make such a difference.
Assuming it's true, I suppose that's one less game to consider buying for the PS3, which means I'll end up buying it for the PC if/when I feel like playing it.
Achievements aren't enough of a reason to buy this for the 360. Not after Mass Effect and seeing the differences between Bioshock and Orange Box on the 360 and the PC version on a decent build.
Been leaning towards the PC version of all non-platform specific games lately.