If the height and weight of Rocky Marciano are the same as Muhammad Ali, who would win?

This. Rocky being short and having short arms made his crouch and infighting extremely effective, since when he and his opponents exchanged in close he always landed first. Rocky’s style would be useless if he was 6’3” just like Tyson’s style would’ve been useless if he were 6’3” instead of 5’9”.

Marciano, Tyson, and Frazier all being 5’9” used their being short to their advantage. However, they were all naturally thick framed guys that carried a lot of power and could drop any heavyweight of any size like a sack of potatoes if they land clean.

 

Still novelties man

 

Marciano was the only one of them that was very possibly five nine. And he did not have a big bone structure for a HW.
Tyson was around five ten. Likely a fraction taller.
Frazier was not under that height.

 

I would pick Ali UD 10/10 times

Marciano would lose his crouch defense. He'd be slower due to the bulk, he'd lose some of his pace and endurance to the size

All of which he needs against Ali. Marciano already hit the point of diminishing returns for power in terms of weight so if he gained power it'd be miniscule

185-190lbs 5'11" Marciano would give Ali a bigger challenge

 

If Rocky was 7ft tall with a 90 inch reach.....






Then he would be somebody else

 

what if Marciano had four arms and a bigger head?

 

He'd present a very strange stylistical issue for Ali

 

Rocky's style wouldn't work well at Flyweight, he couldn't do enough damage. Wilde was a great puncher, and a great boxer, I don't know if he'd get the KO, but he'd win.

 

Frame wise Marciano was extremely thick framed and would've easily been over 210 lbs if he didn't diet as much as do all of the training he did. Also, some of his fight weights on Boxrec are wrong.

http://www.fighttoys.com/Marciano 1954-5-10a WP.jpg


Also, even during his prime everyone knew Tyson was barely 5'9", since 6'2" guys were towering over him. I met Tyson back in the mid 90's and he was 5'9" at most.

Here is an article mentioning Tyson's actual height going into the Holmes fight.

"Tyson has something Holmes never had - the undisputed crown. The 5-foot-11 Tyson, who measures more appropriately at 5-9, wears the World Boxing Council (WBC), the World Boxing Association (WBA) and the International Boxing Federation (IBF) belts. Holmes held the WBC title until being stripped of it, then held the IBF title. The "Easton Assassin" ruled the heavyweight division for 7 1/2 years, defending his title 20 times."
https://www.mcall.com/news/mc-xpm-1988-01-22-2620559-story.html

Here is another article mentioning Tyson's height going into the Golota fight

"Golota is not intimidated by Tyson," Certo said. "Tyson should be intimidated by Golota. Tyson is a small guy and he is older now. When you get older, big fighters intimidate you."

"To me he's a little guy -- 6-5 (actually 6-4), 240," said the 34-year-old Tyson, listed as 5-11½ but who appears closer to 5-9. "To me, he's very small."

Golota weighed in Thursday at 240 pounds. Tyson was at 222."
http://www.espn.com/boxing/news/2000/1019/827160.html

Referring to Tyson height in the Tillis fight.

"At 5 feet 9 inches, Tyson bounced the taller Tillis, who sparred with Tyson before Tyson`s last fight, off the ropes twice in the first round with accurate lefts to the head and worked combinations to Tillis` body throughout the first two rounds."
https://www.chicagotribune.com/news/ct-xpm-1987-11-14-8703260034-story.html

I never met Joe Frazier, but I noticed that even during his prime he always wore shoes with a huge heel on them when he was outside the ring.

George Foreman talking about Frazier height

"What kind of fighter Joe Frazier was:
"When that bell would ring if you were King Kong you better put your cup as close to your head because he was coming. There would be no backing down. Frazier was not a big man at all. Frazier was about 5-9 but he would make anyone run. Put up your dukes and cover up because he's coming. He never backed up from anyone."
https://deadspin.com/george-foreman-says-frazier-and-ali-genuinely-loved-ea-5858061

"Foreman offered more revelations. Frazier was listed at 5-11 1/2, but Big George said that was way off. "He never made 5-10," Foreman told me."
https://www.espn.com/blog/new-york/...eman-joe-frazier-the-only-guy-i-was-afraid-of

Joe Bugner at 6'3.5" completely towered over Frazier.
https://www.gettyimages.com/detail/...azier-pose-news-photo/158163589?adppopup=true

https://www.gettyimages.com/detail/...ourt-arena-news-photo/150575120?adppopup=true

 

HBO measured Tyson before the Berbick or Bonecrusher fight and showed him on the screen to be exactly 5’11 1/2. Why were they lie to everyone and make that up?

 

Walcott could hardly have been that super tricky if short tyrannosaur proportioned armed Marciano was able to catch him like that.