Hard to answer because it hasnt been released for the PS2 yet so no one knows how well it plays/looks on it. If you have a decent PC meaning atleast a 1.6 gig processor, FX5200 video card and 512 meg memory you should have a good gaming experience. High speed internet is a necessity!
It probably wont look as good on the PS2 if you dont have a HD tv if that even makes a difference, I dont know. But then again, you wont have to upgrade the PS2 for future expansions :)
Hope this helps.