I find it funny that the main character specifically says "he's got this", which has been done plenty of times before and people take it as "Zoro will come back! Believe me bro!"
Even if he wins or loses on the roof, you'd think after 1000 chapters, people actually realize that Oda will inevitably give Luffy his 1v1 right?
I've been saying King vs Zoro and Queen vs Sanji since literally 926 when their characters and personalities were shown towards each other. It's not rocket science, Oda makes Zoro and Sanji opponents hate each other, characteristic of their own relationship.
Zoro heading back down and Queen having a personal connection to Sanji's father should have spelled this out already. Even if ZKK "were" to happen, it doesnt fail to invalidate this precedent. But I think people should believe in this more than the idea Zoro kills a Yonko or takes away Luffy'a glory in surpassing one, when he even barely knows he has CoC to do so.