Arguing that GSB can't absorb a certain quantity of chakra when the manga, and I believe DB say otherwise; the more chakra it absorbs the strong/more potent it becomes. This would in turn presumably increase its "chakra capacity" as you seem to think it possesses.
Either way: GSB gets stronger/bigger every second it devours chakra - Manga/DB states what you're trying to refute.
Why would Itachi croak when Yata Mirror deflects the attack completely? Canonically speaking.
And I never said Naruto loses. I just said the above techniques could counter TBB.
Except DB nor Manga said that. It gets stronger, as in larger, when it absorbs chakra. Never says that the amount it can handle is unlimited, so why would you try and argue that it absorbs a Bijuu Dama that dwarfs it in every conceivable way without fail? That's the equivalent of saying that it absorbs it solely because it can absorb chakra.
But if you never said he loses then there's no point arguing.
Because he's alive, and MS strains his body. Nor was he specified to be healthy here. So unless Itachi somehow has more stamina than Kurama's Jinchuuriki, he'd die without Naruto having to actually take him out. The rest are non factors. Akatsuki doesn't win.
I only believe team 2 wins because of the 2 minute time limit Naruto's Avatar has. Her sure as hell isn't surviving Water Dome nor is he going to be effective inside it while Amaterasu can ignite him within it, Raiton can paralyse him, C3 kills them all inside the water, etc. I do agree that GSB wouldn't be fast enough to absorb Naruto's level of TBB's, but it would weaken it tremendously either way.
2 minutes? Huh?
1. His first time limit was 5 minutes.
2. His second time limit as 8 minutes.
3. His final time limit is either far longer than 8 minutes as the Sasuke and Juubito fight took far longer than 8 minutes. We have the initial fight where it was just Sasuke and Naruto, then we have the time it took for them to extract the Juubi.
And he doesn't even need to use his Avatar the whole to handle this crew. Speed, strength, FRS and clones are all he needs to molest everyone on this team bar Itachi if we go with Yata Mirror being completely invincible. Then he simply waits Itachi out.