Board Thread:Versus Debates/@comment-34194151-20180809224927/@comment-31672013-20180827233722

Definitely Jiraiya. Jiraiya is far more skilled in Ninjutsu, has much, MUCH more chakra, more experience, better Taijutsu showings, has a jutsu pool that is ideal for stalling opponents with less chakra than himself, better summonings, and has been shown to be able to break genjutsu (Admittedly we don't know his upper limit, but he has shown he can defend against Genjutsu, even all alone), which Kakashi would likely be forced to center his whole strategy around to even have a chance of contending.

Not to mention, though this is speculation, Jiraiya is likely to have a frog summoned at all times in this battle to break any genjutsu, as Jiraiya has been shown to always take measures against his opponents' particular strengths. It's a stomp in my book.