What does killbee have to do with this thread and we saw that fight, bee lost.
Also before gai's fight with kisame he was greatly weakened + didnt have samahada with him and yet he tanked gai's strongest attacks.
Well think about it, Bee partly lost due to the hampering of being able to fully transform.
I agree with you that Kisame is one of the psychically strongest characters, but behind the Third and Fourth Raikages.
You also have to remember that ALL ninja have a level of superhuman strength whether we see it or not.
Look at this thread for instance, and it's only Kakashi.
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He was able to launch Sasuke back THAT far with only a punch, which Sasuke did indeed block.
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And here, a Naruto who was in his normal mode in an exhausted state was able to shatter stone that was almost completely restraining him.
I sometimes think people underrate the physical strength of the characters due to the fact that Naruto has a large similarity to Dragon BallZ but with none of the staggering strength. But if the characters in Naruto didn't have a ton of physical strength, how would they be able to jump like they do?