Thats what i have been saying, theres no way in hell Oda would put a weaker batch of baddies on the next arc.
Kaido and Big meme where just the bottom of the yonko all allong, just trashy silver medalists who couldnt become PK even though they wanted it, unlike chad WB and Shanks who only didnt become PK because they did not want to. No wonder Shanks wipped the floor with Kaido and didnt let him come to Marineford, and why Kaido wouldnt try to atack a sick and dying white beard until he was busy dealing with Marines.