They were almost even, and that was "barely standing" Luffy.
What a nonsense bro, Kaido was the one who took over 40-60named attacks, lot of them from different supernova, all scabbards and Yamato. And that same Kaido defeat Luffy three times during that time.
If someone was nerfed in this battle, it was clearly Kaido, Luffy only took like 2attacks from someone else rather of Kaido and these two where from Apoo, same Apoo who attack couldn´t knock out Maha or other CP0 guy.
It is clear that a fresh Hybrid Kaido>G4 Boundman with adv CoC/adv CoA...
It is also clear that current Kaido is stronger then Luffy, he is number one for a reason.
Coming up with 1on1 after like the half alliance fought Kaido and calling it 1on1 victory is kinda pathetic.
Not like Luffy, Kaido would still stand after that OKG, Luffy would lose either way with or without the CP0 member.
Ofc after wano the things could change, but for wano is clear that Luffy wouldn´t wiin against Kaido in a 1on1 battle.
Drunken Kaido clearly won his battle against Boundman Luffy.