We haven't seen much Ninjutsu from Oro though we know that he's got many many jutsu in his arsenal. Do you think J.man could defeat him when both of them are at their prime?
Either my reading comprehension is bad or you're implying that j-man is weaker than oro.In their prime ? Hell no. Orochimaru has the Edo Hokages at his side, and even before that, he was still the stronger one out of the two.