I don't think he is overly overrated simply because he was such a physical phenomenon. Granted if he had Eddie training him since he was small like Tyson was taught he would be the best ever. He was so strong, and had a good chin, but he had too many flaws to be invincible. I have a hard time seeing him beat prime Lewis, Liston, Ali. I even think that old Foreman would beat young Foreman simply because young Foreman would tire himself out, and old Foreman had a better and FASTER jab.