IN the arcade you could do diffrent types of ryus powerball thingy, the srtong would travel slow and the fast would take less damage.

yep... most posts are right

this online version is very VERY close to the original arcade...

most basic moves are the same...

the only major dif is when it comes to such things as Variable attack or "helpers"... since XvsSF is a hybrid between all of the vs. games up to and including MvsC...

dont forget, ryu has a special that allows him to change modes....ryu-->hyper ryu(kens moves)-->e.ryu

How do you do that?

Another difference is that shuma gorath is a fighter in the arcade but he is a helper here!!

the greatest difference i see is...
the arcade never complains cheapness

lol.. That's cause if you were playing against the arcade it would not reply when you make fun of it and I think it's a little easier to evade cheapness since there is no lag in the arcade than the online version but that's just my opinion