I disagree because of what Zoro has done to this point. He has fought Kaido this whole time, it's the first time he's gone this off script and fought a Yonko, not to forget he has 0 energy.
In your view what is your prediction on how Zoro ends up encountering King?
I agree with your opinion on Sanji and Yamato, that makes sense thinking about it from the perspective Yamato has yet to fight someone, but only issue is she did mention she wanted to fight Kaido "as oden"
My prediction has to so with someone tying Zoro back to his Shimotsuki lineage plotline. We know it's coming. We know Oda teased it.
This has nothing to do with King, but its the pure fact that there is MORE for Zoro to do in Wano that perform feats against Kaido. I still think Kozaburo is going to show up and explain everything to him. I still think Perospero is going to inhibit Marco from fighting King or Queen. I still think Yamato is fighting Jack. I still think Sanji is fighting Queen. I still think Queen is going to fuck with Chopper and Drake and potentially make them fight.
And in my opinion, that leaves King for Zoro, especially now since it's very easy to take him out of the fight with Kaido. He did what he needed to do on the roof FOR NOW.
I have NOT changed my views about this arc at all yet. I still fundamentally believe Oda is setting up extremely clean matchups between the Strawahts and Beasts Pirates. Zoro, Sanji and Yamato are the last pieces of that puzzle, and I will believe it until the calamity matchups are finalized and either contradict or verify my theory on it.
Its up to you if you are willing to accept that things can be written this way. There IS merit for it.