Maybe. I just have a hard time believing Adv Coa + Gear 4 will be enough to beat Kaido even 5 vs 2.
He needs something extra.
And i fully agree.
Imo it goes like this:
Kaidou seemingly cornered by the 5, then he unleashes all-out attack as a dragon. Flaming clouds and throwing islands around at the SNs etc.
Kidd-Law-Killer-Zoro fight those dragon ultis and fend them off. Zoro reopens Oden scar.
Kaidou enters hybrid mode. The SNs are getting cornered and heavily wounded. Luffy begins to fully use G4+barrier haki. He begin to close the gap, but Kaidou still corners him.
King arrives at the rooftop and picks an opponent. Can be Kidd, or Zoro. BM also focuses himself on the other 2 or 3 of the remaining opponent.
Finally, Luffy uses G4+internal destruction, and equals Hybrid Kaidou.
Hybrid Kaidou having the time of his life. Finally releases True Form of Mythical Fish Fastitocalon or Leviathan or whatever. Luffy enters G5.
So yea imo its still a long long battle. Luffy new WSC yea yea yea