Took a TB to the head and a clean Boro Breath.
1.) Kaido's TB grazed Luffy.
2.) You think a single Borobreath would leave Luffy to such a state in which he was barely standing on his legs? Plus, after 10 minutes, he effectively continued the fight.
And he continued fighting in both your counter examples, he didnt just pass out for 3 days after one more attack like Dressrosa.
Sure if we ignore the fact that Doflamingo's Flap Threads pierced holes in Luffy's body like a piece of cheese.
Pure excuses, he only dominated the fight cuz Boundman could never reach him.
It's not Katakuri's fault Bound Man was too slow to hit him; dude was just using his Haki after all.
Furthermore, both characters played the same game with awakened techniques but unlike Doflamingo, who was throwing entire strings worth of towns at Bound Man to keep him at bay, Katakuri was using few floating donut arms and owned Bound Man.
Two situations and one particular character performed so much better.
Plus, Luffy found a way and broke through Doflamingo's defence and dealt a critical hit at Doflamingo which drastically injured him to such levels that he was wobbling in pain afterwards.
You brought up Katakuri into this discussion but it only backfired. You should have brought up Cracker because I'd have agreed with you then.