I mean, that is the reason we have the fun concept of p4p. Putting Fedor at number 1 is like putting Ali at 1. Sounds cool with the general public, but no one seriously thinks HWs are the best fighters.
Nope, dead serious. Edgar is a shoe in for the top 10 p4p greatest fighters by resume. Jones' best win is Cormier, GSP's best win is either Koscheck, Alves or Fitch in my book? For the record I have no problem with putting GSP as #1 and Aldo as #2. GSP doesn't have a win of the quality of Edgar, but he does have more consistency across the 3 generations of fighters he beat.
And Cormier, even if we consider him in prime when he fought Jones (semi-debatable but close enough), his resume just isn't up to snuff compared to guys in the actually great divisions (BW-WW).