I've been a yonko and admirals are roughly comparable guy for quite a while. But man, I must say what happened this chapter that has convinced me that admirals broadly speaking, aren't Yonko level.
Kizaru has disappointed me with this performance.
Kizaru vs Luffy ended in "tie". But that's because Luffy ran out of steam.
While, Kaido can fight at this level for several hours, once he got used to G5's wack shenanigans he started maybe getting the advantage even in CQC. Kaido would defeat Kizaru maybe high diff at worst, and not be out of steam.
Maybe it's just Kaido is built different and I'm judging Kizaru too harshly? IDK
The only Yonko Kizaru can defeat is BM I guess.