Now that I think about it, Oda has been more about showing off Zoro's cutting ability postskip rather than his actual skills as a fighter, so Zoro vs Queen makes a lot of sense, as Queens DF would make him the most durable of the Calamities.  That thick ass hide of a brachiosaurus + CoA Haki would be no joke to cut.
		
		
	 
				 
 
		 
 
		
 
 
		 
 
		 
	 
 
		 
 
		 
 
		 
 
		 
	 
 
		 
 
		 
 
		 
	 
	 
 
		
 
 
		
