As to Hawk5ins' point, "*What performance, prior to the Tyson fight, agianst a reputable fighter did Buster demonstrate Power that we could categorize as reputable."
My reply (as a non, never-was-a-Tyson fan, and not doing any revisionism), is that Douglas really hadn't been in the ring with reputable guys (in their primes) before Tyson anyway, other than one: Tucker. Page and others were well past their primes.
So, he didn't have the chance to demonstrate power against any "reputable" types save Tucker, against whom he performed very well before the inexplicable ending. Had he KOd every previous opponent, you might still have replied that none were any good.
Further, LOSING to people isn't the same as NOT HAVING POWER. Earnie Shavers lost a lot of fights; but who here thinks he didn't have power??? One has to be in a position to demonstrate the power, and by skill or luck land on another's chin. We observers can SEE the power, as we did in Tyson-Douglas... jolted chins, wobbled knees, being stopped in one's tracks, etc., are signs of power demonstrable over the airwaves.
That's why I don't look at a guy's less-than-average KO percentage and assume he has little power; he may simply be someone with respectable power who chooses to fight in a way that doesn't maximize a quantity of power shots. Ali, for example, had excellent heavyweight power, and won most of his big fights by KO/TKO. BUT, he elected to use a style with lots of movement from which punches could not be his most powerful. Doesn't make him an unable or underachieving puncher.