Any reason to pick up a different release of any of them? Any bugs present or features missing that don’t apply to other releases? Any real difference between regions for any of them? That kinda stuff.
From what I know:
ps2 3s is faster than arcade.
hsf2 has a problem with claw’s divekick input, but I heard it was fixed in later versions, the question is which.
Vampire Collection has the best ports of the Vampire games. Especially, with the right dipswitch settings. But, you’ve been hearing that from the players for a long time.
I believe it was because there was antilasing on the DC so the characters and animations have less jaggies. Thats really been the only reason why people played that over the PS2.