Well, you can't really underestimate Kisame like that. Kisame is still part of the 7 Swordsman which is dangerous like Akatsuki, as well as Itachi killed his whole clan. It's really better to see them fight.
true,but kisame i think only has 1 jutsu which is water shark bomb jutsu and kisame has that big sword but the leaf village is the strongest village and the uchiha clan is the strongest clan in the leaf village and that makes itachi and sasuke and maybe tobi the strongest but kisame is the 2nd strongest in* the akatsuki.
Newsflash! Kisame knows ALL the water techniques.* Plus there's gonna be the ones he made himself.