Ok, if he had anywhere near Bee's chakra, even Bee's entire chakra arsenal was drained to the point that he was going to faint in seconds, and he's one of the biggest chakra monsters in the series. Do you have proof that Kakuzu does have that much chakra because that's what you're supposed to prove?
No, you didn't prove that Kakuzu doesn't have good chakra. You only prove that Bee has better chakra then Kakuzu. And actually Bee had no problem swiming and escaping. It was when Kisame got close and drained him out.
Sabu was still able talk the the Water Dome and his chakra wasn't completely done
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(someone with lack of feats to able to do that), In fact he escape by himself because Bee gave him time to
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.. Putting Kakuzu in that situation is the same by feats he shown better chakra then Sabu. Kakuzu will analyze the situation and command his other hearts to separate on four different locations and escape while Kisame finish off Kakuzu. From there the hearts come back to the owner.
A single mask that fodder jutsus have destroyed by themselves
(lolwut: I'm not gonna waste my time replying to that part), with 1 jutsu, will be able to get past a giant water dome and high kage level shinobi who drains chakra and excels at absorbing ninjutsu and has an insane arsenal with high firepower? I don't see any masks getting past him especially when they're only masks so you'll have to try harder
no one is applying that they are fighting inside the dome, Kakuzu is smart enough to notice he is draining chakra. Like I said the best thing to do is use the same strategy Bee did and Kakuzu has intellengent feats to do it.
I don't think I'm going to take you seriously if we have to argue Kisame vs Kakuzu's masks and his masks alone. How am I underestimating them? They can do whatever they want, they're not getting past Kisame, not by a long shot.
Again I have NEVER applied that they are going to fight Kisame, Their main focus is to SAVE KAKUZU. LIKE this:
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This is what I meant about underestimating them, You are underestimating that they won't save kakuzu.
Oh? Like what specifically?
While Kisame doesn't have full knowledge by any means they're fellow Akatsuki members and are bound to have some form of knowledge on each other. But Kisame's not a guy who needs knowledge when his attacks are on a completely different scale and perfect for destroying Kakuzu. And the same goes on the reverse, you can't act like Kakuzu has full knowledge.