The data book states that j-man has a 3 in genjutsu, his stats are equal to itachi, Jiraiya was a very intelligent man, He knew alot about the sharingan and its techs for exampe when itachi used amaterasu to burn through the toad he instantly preceived it as amaterasu and sealed it.
Are you serious? FANBOY ALERT. He did not know what Amaterasu was. Find me a manga page where he says, "watch out Naruto, that is Amaterasu!", because I distinctly remember them wondering what made those black flames.
Also Jiraiya has a 3 in genjutsu. Itachi has a 5.
5>3, your logic does not compute. :/
And by the way don't reference the databook stats unless it is about chakra levels or some measure of strength or speed. Orochimaru has a 5 in genjutsu same as Itachi but Itachi trolled Orochimaru easily. EASILY.
But anyway I really don't want to trash this thread by turning it into an "Itachi rapes Jiraiya thread" because I like Jiraiya as a character, but if you become an more of a fanboy, then I will.
I've already argued for Jiraiya if you look up above, but I will not put up with fanboyism, and you sir are full of it.