I've never seen one of those, but I know exactly where the arcade is you're talking about. I totally forgot the name of it though.

The idea of online arcades it kinda weird to me. I mean the reason to go to the arcade is for "face to face" competition. Now I know sometimes you go to an arcade and there's no one there to play against, but even so, I think an online arcade fighting game would be kinda pointless.