If any heavyweight landed a powerful blow on another?

Well ofcourse! come to think of it...depends on who's throwing? Who's receiving? does the receiver know he's gonna get hit?

 

You add up the weight behind the punch.. And when one lands clean, who won't be stunned anyway?

 

I think any HW who has a clean, full wind up shot to the jaw is knocking anyone out- doesn't matter if they see it or not. the brain is hitting the inside of the skull, and you're going down

 

I recall Lennox hit Mavrovic with 3 clean pure powershots in a row and the guy didn't really budge.

 

In all honesty it depends on who is being hit,who is doing the hitting,and if the person being hit sees it or not.......some people are just more capable of taking a punch better then others. . . For example the shot the Lewis knocked out Rahman with in there rematch,that shot landed on a Wlad or a Shavers would probably have had the same results as Rahman.....but against people like Cobb or Foreman might have yeilded different reactions because those 2 guys have proven to be a lot more resiliant.Just my opinion...i guess like i said it boils down to the individual.