[MENTION=11830]sarosh[/MENTION]:you've probably overlooked the fact that arkham asylum is quite an old game-it came out in 2009 and back then it was considered to be one of the best looking games in the market.Truth be told,when i played the game for the first time i was awestruck by its visual splendour.However almost 6 years have elapsed since its release and graphics technology has advanced significantly since then,so it may not looks quite as good today as compared to some of the newer AAA titles featuring modern graphical bells and whistles as it did 5-6 years ago.But still i don't think they look bad at all by any stretch of imagination-the visuals may appear to be a bit dated but they are by no means as "poor" as you might think.
(ps-you've said that in your "pc gaming experience" Arkham asylum has the worst graphics of all the games you've played till date,which leads me to think that your "experience" isn't really that extensive or diverse in the first place.Have you played prototype?If not,you might want to check that out-that'll teach you a thing or two about awful graphics)