Frazier's left hook was quick, accurate and frequent, but it wasn't as mean as Morrisons. I don't see any evidence on film compelling enough to make such a statement.
He knocked down and knocked out better fighters than Morrison ever did, that's how we're comparing them.
But sometimes you have to take opposition into consideration, look at Wilder, he has a glossy high KO percentage but as soon as the level of opposition slightly crept up, the power kinda disappeared.
How many did anyone knock out ? This is a comparison of Frazier and Morrison's left hook, not really the point whether some people overrated Frazier's power. I'd probably agree with that. Frazier "knocked out" (including TKO) better fighters than Morrison did. That's a true statement, surely we can all agree on that.
He didn't bust Ali's chin--he caught him with his feet out of position and dropped him. Ali finished that fight and two more against him without going down.
There's a very, very big difference between knocking someone down or battering someone enough to get the ref to step in versus separating someone from their senses.
Sure, but that's an extremely incomplete and unreliable measure of which fighter had the better or more powerful left hook.
The measuring of left hook power, Lefthookerology, is best measured through the viewing of incomplete choppy footage, grainy stills and 1st hand accounts.