Kaido is much stronger and characters have different attributes, Fujitora and Kizaru may both be top tiers, but that doesn't mean I'm going to say Fujitora is as fast as Kizaru, Kaido has the feats to say he could effortlessly handle the entirety of Dressrosa except Fujitora, Fujitora does not have the feats to say he could even handle King alone effortlessly, let alone all the others as well.
Kaido blitzes and one shots those guys in base form, the thread isn't a sequence of 1v1's, it's team A vs team B, and it just so happens that Kaido can solo team B.