Re: Sonny Liston vs. Larry Holmes
As Joiner correctly pointed out, he boxed Holmes before Larry really cultivated his jab. It was not yet the weapon he decked Ocasio with.
It was certainly faster than Liston's, and Ali demonstrated what happened when Liston faced a faster long jab than his own. Larry was a pure boxer, and Liston was a physically durable customer, so Holmes would take the 15 round UD here. It comes down to hitting and not getting hit, and with Larry's speed and mobility, those advantages are all his.
That Holmes had the bigger heart is something few dispute. He is also far more intelligent than most HW champions, and wouldn't have indulged in the foolish mistakes Henry Clark did in 1968. (I realize that wasn't the Sonny of old, but Clark did leave himself available to be hit, yet was on his feet at the end.) If Liston had been facing a peak Holmes instead of Machen, Larry would have won that decision comfortably.