The minute he pulled his sword on Cobra when everyone else grabbed there pistols I was certain heβd be Zoros fight. Oda needs swordsmen of high caliber to fight Zoro to add more weight to the WSS title. Despite Mihawk and Shanks being swordsmen and top 10 in verse would be nice to see another few swordsmen who are strong. Heck Iβd like Vista(Post time skip Crocodile treatment) to be shown again either present day or flashback during 2 year time skip fighting Mihawk.
Also Law and Zoro are close in Wano, but at this moment I donβt see Law being stronger then Zoro, Blackbeard made sure to halt his growth.