Crocodile implied he can defeat WB even though he couldnt beat pre-gears luffy? Im supposed to take it seriously or something? If someone like fujitora would set his eyes at pica then the guy would be dragged in the bottom of the sea without leaving a single trace behind. Leave hype aside the way vergo was treated by Oda during PH is something the executives would only dream of, apperantely pica has no panel that he was able to hit zoro, not even once.
Pica can solo every enemy at dressrosa according to what Oda wrote a few chapters ago. Vergo never received that level of hype from Oda.Same writer made Pica claim that Zoro can't cut him even after witnessing what Zoro has done to his golem which means that Oda was hinting that he was no 3rd rated haki user.
OT: Law would win high diff in a fight against zoro, I dont think law will ever be qualified as complete swordsman, he actually uses a sword just to be able to throw attacks and sword style fighting isnt his only way of fighting, he fights with hands too, such as 'mes' or other attacks.