@Kōri no kokyū you putting too much trust in Law, PW aint doing shit to Kaido. The difference in BM and Kaido durability is miles, one can die from falling off a cake, the other gets a headache from a 10km fall.
Current Zoro pushes Kaido to ext diff, maybe even beat him
If Yamato can stall King then I can see the others finishing of the BM and Kaido alliance and then help finish off King and Kaido (Yamato, Marco, Kid and Law have the firepower to finish off any top tier). But if Kaido beats Zoro then the alliance is finished.
Tbh Oda underutilized the alliance when it comes to commanders. Yamato was missing for most of the actual fighting, she is the second strongest member of the alliance. Marco got spent without really getting the 1v1 that he could have. The Scabbards were wasted on Kaido (he was too much for them). If you let Zoro start against Kaido and the Scabbards are free to help in other places then there is a lot of shit that they can do. Denjiro is easily YC3+ at least imo, YC2 even.
The thing is that these head on matchups in power scaling dont happen in the story like we want and if adjusted accordingly the alliance has a way better chance.