It would have been very one sided, Henry Cooper was one of the best left hookers in the game. Big George Foreman swarmed all over many an opponent, not giving them time to set up their punches. Henry was good, but George takes him out early and bloody. These are both fighters in their primes. Also Iron Mike used to pay pilgrimage to Sonny Liston's grave site, before some of his fights. Foreman used to idolize Sonny early in his career, and modeled his style after him, they once sparred together.