frog>slug>snake>frog that's how it it in the ancient mythology so jiraiya can beat tsunade, tsunade beats oro and oro beats jiraiya xd but I say Tsunade once oro weakens jiraiya she'll win it
Jiraya and Oro for years have had the best showings up until recently with Tsunade taking on Madara the only problem is though she is fighting with the other Kages wheras J-man would have gone head to head with Madara mono e mono (summonings use chakra so they don't add to squad size in my opinion)
he would die but he would be far from a push over
wheras oro would get dropped by a genjutsu again lol