What would happen if Hagler at foughten a natural middleweight version of Leonard, who could move for 15 rounds, and could punch equivalently harder at the weight? Leonard was untried for all intense and purposes against a guy at the highest weight he had ever been at. He hadn't had a real fight in three years, he couldn't maintain his movement for even 6 rounds. I think people are forgetting the factor of Hagler's size, and that with that advantage he was still on basically an even playing field with an old Duran, rusty Leonard, and he basically outchinned Hearns which Leonard had done before, and lesser guys have done since.