Knowledgable boxing people will compare skills and education(experience)! the average fan needs to use common opponents or other statistics, they don't know techniques or are able to understand "willingness" of a fighters passion to win.
Arcel is a wealth of knowledge from his "experiences" and certainly knows the entangables that the great fighters had and maintained. Styles make fights so common opponents can be very overated when judging a fighters abilities.
My opinion of Freddy Brown & Ray Arcel is their at the highest pinnacle of trainers, corner work (ability to take care of a fighter and break down the opponent)!!! They were the type of trainers that fighters layed it all on the line for!!! Ray.