huh?
Divisional rankings make sense because you can fight other ranked (or unranked) fighters and move up/down accordingly.
P4p will never fight each other and that makes it stupid. We'll never see the 135 woman's champ fight the 125 male champ even if the female is ranked higher in the p4p. We're never gonna see the 185 champ fight the 155 champ even though the 155 champ is ranked higher in p4p. We're never going to see the 170 champ fight a contender at 205 even though the 170 champ could be considered the p4p best fighter in world.
It's hypothetical completely based off a couple individuals' feelings about a fighter. It's not based on competition just strictly promotional and for marketing purposes. Examples of this is how many fighters have fallen from p4p slots without even losing? Just magically went down in rankings. I got 2 off the top of my head: DC and Nunes.
And for the record I'm for open weight no weight classes. Then we'd really see if who the best fighters in the world are.