Lol... Itachi's mission was to tell the three elders that "i'm alive" he was secretly working for his village he had no intention of killing jiraiya who was protecting his precious village he sacrifised his clan for infact from what we've seen in the manga so far itachi could fight on par with jiraiya he doesn't need kisame to kill jiraiya and to make matter worse itachi had kisame with him. Do you really think jiraiya could take on 4 akatsuki members at the same time??? If itachi had admitted he was stronger than jiraiya then kisame would have insisted itachi kill jiraiya and capture naruto which itachi he never wanted. Genjutsu doesn't work on a sannin? Where did you guys get that frm? Seriously i'd luv to knw where you got that from bcuz oro got caught in a genjutsu and he had prob dispelling it.