I just know that when Oda used the animal, hybrid form of zoan DF, there is nothing anymore interesting about the guy. P1 showed pretty much everything he has. He is based on strenght and has shit haki, so limited.
Queen is kinda the same style (based on strenght) but with better haki, his weapon, his epithet, hybrid form. Oda would rather use him as opponent for sanji than P1 IMO.