Let's be honest, no matter how you look at it, it doesn't make any sense. This can't be the exact moment Kaido went hybrid form for what they say in the latest chapter but the 5SN can't even be able to hold two emperors for a bunch of minutes. Human Kaido destroyed the scabbards (sulong dukes included) and oneshotted G4 Luffy at the beginning of Wano, and that Luffy is clearly above any version of the other 4 supernova.
Now they are against hybrid Kaido and Big Mom, can you imagine thinking hakiless Luffy, no asura Zoro, Kid, Killer and Law are so much stronger than 18 scabbards (twice the emperors, twice the scabbards)?
BM is going elsewhere, they are going down to Kaido alone. Then the other fighters are going to help them.
Now they are against hybrid Kaido and Big Mom, can you imagine thinking hakiless Luffy, no asura Zoro, Kid, Killer and Law are so much stronger than 18 scabbards (twice the emperors, twice the scabbards)?
BM is going elsewhere, they are going down to Kaido alone. Then the other fighters are going to help them.