U can't fight make the person fight well when using him as edo as seen as Nagato was fighting Itachi and the two jin. What ever happens Jman is better than oro. Look at oro vrs naruto he spammed da rebirth but jiraiya didn't even use sage mode and beat him. Doesn't that prove anything
Have you hated someone you know was better than you and would take you out anytime you try to take him on?
Deep down, its fear of being beaten that makes you grow stronger. Exactly what happened between Sasuke and Itachi