altho there's always the thought that the arcade game drummers are not actually doing the 'real' drumming thing, i wld say its a variation of real life drumming and that it stands on its own.
it's a bit like living in modern times, virtual stuff is fast becoming legit in its own right. half-life counterstrike (the game) is different from real life combat soldier fighting, but it has its merits, and you can shoot each other and kill without having any of the real life's frightening consequences.
countries are beginning to form cybersports association, and they even hire mental and health trainers to ensure the players stay in tip top condition to compete in cybergames.
while the arcade drummers do not have the 'touch' of a real drummer, they acquire a certain kind of muscle memory and sight reading thats interesting nonetheless. (not to mention, they're mostly playing open-handed - which is great!!)
cheers