The fight that proves his grit and great boxing ability to me was the Layne fight. It’s hard to look like a good boxer against Marciano. Against Layne you really see why he belonged in the upper echelon. Was he an ATG contender? No but he was a damn good fighter
As a contender, he was a flash in the pan. He was a #1 Ring Magazine contender, and perhaps among the weaker ones, in the history of their rankings. However I don't have any problem with him being given that ranking.
4th tier heavy at best. The fact that he caused a ripple in his era says much more of the era than him. His best work was in the Batman TV series.