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and arisonius, itachi did hold back against sasuke, had he wanted to he could have stabbed sasuke with totsuka if he wanted to, but he didnt, and also kb is stronger than sasuke, even if sasuke went into the fight still recovering, he had karen there, who healed him back to life, and from what it looked after she healed him he was in perfect condition, not chakra wise, but certainly health wise, and sasuke may have been recovering but his team wasnt and from what the manga showed us juugo and sugeitsu couldnt do anything, so not only did he basically kill sasuke twice, he destroyed sugeitsu, almost killed karin and left juugo in kid form crying, sounds like one. kb didnt get hurt, hachibi lost 2-3 tails, which really only means he lost chakra because thats all a bijuu is, chakra in physical form, its not like they are real animals or anything.
First off, Sage, I'd like to thank you for defending my thread.

Also, thank you for posting.
While its true that Karin healed him, I don't think she had the ability to heal him fully. If you look at him after Karin heals him he seems rather fatigued still.
With Jugo, I think te healing is more complete, but I could make a case that chakra use, especiallyit's over use, has a negative form on the user. This is obviously the case if you look at what happened to Jugo after he healed Sauske, and I'd find other examples but I'm a little tired at the moment. If you want them I will find them in the morning.
As for Jugo and Suigetsu being useless, I agree, but only partially. I think it's important to remember that Sauske didn't form this team to fight Killer Bee, it was formed so he could fight Itachi.
Juugo obviously is very strong because he slames Killer Bee, I will admit we don't see any resulting damage.
As for Suigetsu, he is obviously very skilled with Water Ninjitsu. This being the case he is weak against someone like Killer Bee who's nature element is Lightning. Even so, he managed to hold his own, if only for a moment (he blocked an attack), against a fully transformed Killer Bee.
You are right, Killer Bee came out of this fight looking, for the most part, unschathed. I think that this is mostly due to his Beast Tranformation, as ? honestly believe that Amaterasu would have killed him had it not been for Habachi who had to sacrifce a few of his tails of Killer Bee's sake.
So then, what is the greater determination of damages? Those suffered by Sauske, or those suffered by Habachi? To my knowledge, the feat of getting a Bijuu to lose its tails (weither he did it voluntarily to save Killer Bee or not) has been previously unheard of in the series.
I honestly doubt Habachi would have given up the tails if he had seen another way out, because I don't think that they will grow back. I currently have no evidence to prove this, other than the fact that Akatsuki was able to seal one tial of Habachi's, so we will have to wait and see what the manga says about that. We probarbly won't find out until we see Killer Bee again.