If we are just talkin functional/in fight puncing POWER. Not speed, accuaracy, etc... I would say Shavers. Foreman had alot of people talk about his brute stregnth. But the Acorn was the only guy thst I can think of that all the guys that he fought made it a point to let anyone that would listen that he hit harder than anybody that they have ever been hit by.

Holmes was actually asked to compare Tyson & Sahvers punching power (since he had fought them both). He said something like "Tyson's punch is a corvette. Shavers punch is a mac truck." All of these guys opinion & statements are enough for me to buy it.