In terms of head-to-head capabilities: Carlos Palomino Billy Graham Benny Paret Errol Spence Jr. Ike Quartey
I used to figure Spence would beat Quartey. I kind of doubt it now. Palomino might lose to everyone on the list, but Palomino might take Quartey in a 15 rounder.
I feel Quartey was better than Spence, much more dynamic. To me, Spence seems like one of the most ordinary star I can think of throughout boxing's history