OK, i just did my research and this is what i found.
In SF3 (3rd strike), Ryu Hits with one fist, then dragon punches with the oposite. Again, has to be full super bar. In MvC2, it's the same thing, only it electrifies the oponent, and again, it's a lv 3 super. Now in Alpha/Zero 3, he starts out with an elbow, so really you don't have to be as close as you do in the other games. but he elbows, then launches the Dragon Punch.
Anyway, for those who still doubt.. be enlightened
