I think he's only there because he is undefeated. Looking at his last list of opponents Barerra should be number 1 p4p. But PBF got it because of who he fought near the beginning of his career but nothing recent, why do you think Hopkins was always over him until he lost. PBF never moved up, he only moved up because the people above him lost, not because he earned it during their reign. He wouldn't be p4p number 1 if RJ and BH hadn't lost.