well yeah i know itachi is extremely powerful. but he isnt unstoppable. Kishimoto isnt gonna have legendary nins only to have this guy on such a higher level. And even if Oro says Itachi is stronger... Oro's meaning of stronger = knowing all jutsus, which teh sharingan is capable of doing so. And lastly, even though Jiraiya may be stronger , he will not be the one to kill itachi no matter what. Sasuke has to. Its just impossible to believe otherwise since that is Sasuke's goal since the begining.