Well as far as Naruto goes I don't really compare him to the other Jinchuuriki because they were all very different and had different fighting styles and we haven't seen anything from any of them besides Gaara but if you want to compare him to anyone it would have to be Gaara, who was not only very young(the same age as Naruto) but incredibly strong. In terms of control Naruto isn't anywhere near Gaara's level. Plus when it comes to how strong Naruto should or can be because of the Kyuubi you can't really compare him to the others because Bijuu 1-8 combined < Kyuubi and that is important.
I don't know where you heard that from but that is completely untrue, yes Kisame is probably the most powerful Akatsuki in terms of chakra capacity but he can't generate anywhere near that amount of power. That would mean that fully powered Kisame's strength would be on par with a fully released Kyuubi and that is just not true. We've seen Kisame at 30% already that is what he used to fight Team Gai back when they were trying to rescue Gaara. Kisame may have alot of chakra but when it comes to generating massive amounts of chakra no one can compare to a Jinchuuriki.Originally Posted by conquistaDan
-Yes, I do think that the 4 tails was the strongest one we've seen so far. I don't know why Kishi chose to have that battle take place off screen but I'm hoping when the anime gets to that point we'll get to see more of him and hopefully his techniques won't be too fillerish.