It doesn't have to be the same kind of playstyle for the online mode.
Take Chu Chu Rocket as an example, that in built lag changed the gameplay but it was still fun.
If VF5 doesn't have online play then I will never get to play it with anyone else. I would rather have the option of playing human opponents, even if it isn't as pure an experience than being stuck with the AI. Besides this is Virtua Fighter not Dead or Alive - most characters don't even have counters unless you are playing as the likes of Akira (I have played all the VF games except VF 4 and Kids).