Hardest puncher between these guys SHOT FOR SHOT

Can someone explain the difference to me between who is the harder puncher and who is the harder puncher "shot for shot"?

 

Seems like "shot for shot" would favor combo punching because it's shot after shot.

I would term it "best single-punch power" if I were looking for that. And I'd say Earnie Shavers wins that for me.

 

Very tough call .. personally feel Morrison was a step below the other three .. very hard to tell ..

 

Let's not forget Gentlemen Gerry Cooney either when it comes to left hooks. Foreman said Cooney was the hardest puncher he fought on David Letterman's show, it's on youtube. Letterman asked him, "harder than Joe Frazier?". George replied "harder than Joe Frazier!"

 

I don’t speak a word of Chinese, so I understand.

 

Some Marciano info:

In 1955 a group of researchers at a military facility were asked to determine just how much Marciano could ruin someone’s day with his fist if he really went for it. After a few tests researchers concluded that Marciano’s punches were comparable to “armour piercing bullets” and that the force he exerted with a single punch was roughly the same amount of force it would require to lift 1000 pounds a clear foot off the ground. Meaning Marciano could technically, if he really wanted to, have punched a 200 lb refrigerator 5 feet across the room. *

*According to our research, a refrigerator weighs, on average about 200 pounds, given that Marciano’s punch contained enough force to move 1000 pounds straight up, it’s likely that with a good enough punch, he could lift a refrigerator clean off the ground and send it through the air. Which is awesome.

According to boxing historians, one of Marciano’s widow-makers registered a score of “925 foot pounds”. that’s the unit of measurement commonly used to measure the force behind bullets! Taking into account the fact Marciano was wearing boxing gloves when that test was conducted, it’s safe to say his actual punching power sat close to a 1000 foot pounds which is comparable to the kind of power behind a 44. Magnum, the gun Dirty Harry famously said could blow a man’s head clean off. And Marciano was packing this kind of power, in his arms!

Punching Power Coach:
http://www.angelfire.com/dragon2/powerpuncher/

 

I'll take the word of my old buddy Randall Tex Cobb He swore Earnie Shavers was the only man that really hurt him

 

Actually it was a day or 2 after he fought Cooney. Foreman still had the shiner Cooney gave him. Tyson was still heavyweight champ and undefeated at the time. Not for long though because a month later in February 1990 Buster Douglas shocked the world.

 

Best Left Hook 1- Tua, 2 - Cooney, 3- Morrison, 4- Tyson, 5- Frazier, 6- Shavers, 7- Ruddock, 8- Foreman, 9- Liston, 10 - is tie between Weaver and Bert Cooper.