My only concern with Mantequilla is that he was kind of small for the weight. He could box circles around everyone, but he's at risk of getting manhandled by larger guys. I'd make him the favorite against everyone in the division...just not automatic.
Napoles was a level above today's WWs skill wise. The only drawback he has is his tender skin, which I can see Crawford and Spence creating a problem and cutting him. Besides that I favor him to clean out the division. Just too good for all of them.
He loses to Ennis, Crawford, and Spence. He's too small and we saw what Monzon did you home( who is p4p lower than the top WWs today).
Not sure what Napoles losing to a top 3 ATG Middleweight, a weight Napoles didn't belong at. Has anything to do with how he fares against today's WW's. Do you think the likes of Crawford and Spence would move up two weightclasses and fight Monzon ? Hell they won't fight eachother let alone fighting a monster Middleweight like Monzon.