But he's never fought anyone w/ MS. And he looked at Itachi's eyes several times in pt1. And the databook stated that Itachi is faster than Jiraiya.

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Non-MS base Itachi beats SM Jiraiya with relative ease. Go ask Orochimaru.
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Yeah, after reading Chie's arguments, I am embarassed.
So yeah, Itachi will win. And the only MS users during that era was Itachi and Shisui rite? So yeah, he might not have experience with MS users. But I wonder how Kakashi could know about Amaterasu. Maybe Kakashi and indeed Jiraiya knew about MS jutsus but lack experiences in fighting them.
Non-MS base Itachi beats SM Jiraiya with relative ease. Go ask Orochimaru.
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What does base have to do with anything :dead: It's irrelevant. At their full power who is going to win? That is all that matters. Jiraiya will win with high diff.