Probably the competition plus the fact that he's fought in three divisions during the last couple of years, which IMO is a closer indication of what PFP is supposed to be.
"Way past his prime" GGG.......... have a day off GGG won the first fight and lost the 2nd fight GGG spent many years fighting your Macklins, Geales, Murray's & Curtis Steven's of this world and by the time he fought Canelo he may have started to go on the slide but by no means was he finished lmao, he was an absolute force.
I agree with everything you say here but, is there anyone currently active that you fancy to beat him in a P4P match up?