lt's just my speculation, Kaido and his crew are crazy and careless, Jack attacked navy ships with Admirals on it knowing he couldn't do anything to them.. Also i think there's a gap between YC1 and YC2 that's why Marco is inbetween King and Queen Bounty wise.. Queen is considerably weaker than King.. l know this type of opinion doesn't make Sanji fans happy but it is what it is..