No, Fullmer-Paret. Benny took a horrible beating from Fullmer, Fullmer just unloaded everything on the poor guy. Griffith-Paret III was pretty even until the end where Emile just kept on punching an unconscious Benny.
You're using the Harrison fight against an old, much smaller come-forward fighter as a gauge to show that Harrison would beat a master boxer like Guzman?
Griffith vs Paret http://www.youtube.com/watch?v=StKw0kkJQzA Cooney vs Norton http://www.youtube.com/watch?v=8Fb0Qidm9Fg Morrison vs Mercer http://www.youtube.com/watch?v=fpdeONftgaA
Morrison Mercer wasnt a sustained beating like some of the fights mentioned, but the KO was horrific - the way Morrison was basically sat on the rope taking those punches, I surprised his head didnt fall off.