Kyuubi > Itachi and Kisame. They are worried about the Kyuubi inside Naruto. Please I thought you were smarter.Even if this is true, the ' With him [Jiraiya ] as our enemy even the titles of Konoha's Uchiha clan and 7 ninja swordsman of the mist pale in comparison' refers to Jiraiya, which means Jiraiya's level > Itachi and Kisame level.
Anyways, if you really believe what you wrote means part1 Naruto >>> Itachi and Kisame. Which is bullshit at best.