bigmom created no distraction.. Killer and kid dashed at the kaido and he used tatsumaki and captured luffy.. kaido was like Ooff.. and got up like it was nothing.. the attack was intense but it didn't nothing.. BM noted to the intensity of the attack was concerned about kaido but he was alright even Kid was wishing that it did something.. which it clearly didn't.
oops. big mom shouted in disbelief and then immediately swooped in cover kaido. lets not act like these never happened.
nope he was also put down by Red roc the panels are clear and kaido is visible throwing up blood.. compared to just getting right up after gear 4 getting... he which wasn't different from the collaborative Togen Totsuka from the scabbards even that did something but this didn't do much
here's kaido's reaction to the red roc, in his own words : did his punch damage me?
while bigmom's reacting in shock and had to cover for kaido when the g4 barrage ended.
thats literally not even debatable lol.
Luffy went all out with the barrage and it did barely anything to kaido.. saying that kaido was knocked is an exaggeration and kaido didn't affirm that Claim either
what i chose was relevant since kaido is in his base and red roc is one punch attack like gear 4 king gun.. which did nothing compared to red roc kaido just instantly transforms and barely spits any blood
big mom affirmed the claim that kaido was knocked out when she came in to stop the supernova from ganging up on him. and these arent even G4's strongest attacks.
any how lets wait lol. lets see whether fire is kaido's weakness and it'll be clear when luffy uses fire to defeat him, going by your theory. :)