Patterson said Ingo hit him the hardest of all the fighters he beat. He elaborated on that in the interview when he was asked if he truly hit harder then Sonny. Also, Ingo's KO record doesn't particularly impress me. Retires when he's, what, 31 or 32 after a total 28 fights with a whopping 60% KO percentage. 26 knockouts in 37 wins. That's very good, but compared to Shaver's maintaining ridiculous KO percentage up until the age of 50 along with Foreman nearly doing the same... The two just don't compare.
The best guys Shavers KO'd were a decrepit Norton, an old ass Bugner and who?. Johannson, Machen, Patterson, Cooper, Richardson, Erksine. In the quality department, Advantage Johannson.