King couldn't handle izo and kawa, how is he going to handle zoro and sanji? That sounds like a low diff.
There are some people that think because king and Sanji are about to fight means that queen is weaker than queen which is just bullshit because they don't want to see sanji do good. I don't expect sanji to win in fact i expect him to lose mid to low diff but don't lower king just because he is going to fight sanji.
Sanji's objective is to rescue momo not to fight King.