Sannin win this. Sasuke's EMS powers were never shown to their full extent yet affecting my choice. But prime oro > MS sasuke tbh. His sword can pierce through everything if I remember correctly except maybe itachi's mirror. So there goes sasuke's susanoo defense. J-man can beat juugo, karin, and sugietsu one on one. Or hell two on two with tsuande's help.
Sasuke didn't beat oro. :| He waited until he was weak, then oro got greedy and used his body take over technique and it backfired on him, sealing him inside of sasuke. Then when sasuke fought itachi, oro could of easily killed sasuke. :|