UFC 179 Mendes would be Champion in todays 145 Division. I love Holloway and Volk, but the only times Volk was in Danger besides Topuria, were Islam (ofc) and Mendes. Mind you, Mendes was a Shell of his Former Self when he fought Volk and still managed to take Volk down, as well as hurt him badly.
A Prime, Focused Chad Mendes would be a Problem for Todays Featherweights. For anyone to dispute this is ABSURD, go rewatch Mendes’s resurgence after the first Aldo loss.
Also, It’s absurd to discredit Frankie and KZ as well. Those guys in their Prime, beat most of the Top Featherweights of today. A Prime Frankie vs Topuria would be a SCRAP.