If he couldn't keep Leonard off of him, he wouldn't have been able to keep Hagler off of him. Yeah, if they fight 100 times, Hearns wins some of them...stays away for the whole fight, cut-eye TKO, etc. But by far the most common outcome, if Hearns goes into stick-and-move mode, is that it still ends with Hearns flat on his back; it just takes longer.