Dan Henderson is without a dout the most overrated fighter in history. I won't bore you going over his old fights because that is what they where BORING. Will just say in his first 25 fights he barely beat Carlos Newton a ww and beat Renzo another ww i guess thats what they mean by any weight any time. Theres a old stroy that he beat big nog once that was a judges error they counted the score cards wrong and he won a split decision not a real victory like the arm bar lil nog beat him with.So nothing else worth mentioning in those first 25 fights other than his loses to Wandy, Arona and Misaki.
Ok now his last 12 fights he fought Vitor when he had a mental lapse and he let Dan win he fought Wandy who he already lost too when Wandy had 107 degree temperature and pneumonia. He than lost to Rampage and Anderson to lose both his so called belts that he never defended, don't forget he never defended any of his so called titles so he never was a champ of anything. At this point he doubled his steroid intake(even more than his pride days) and was able to out point Palhares his only real victory in these 12 fights another judges error gave him a victory over Rich. When he fought Bisping again roided up he probably had plaster in his gloves to get that knock out cause he does like to cheat. Cavalcante actually tripped and knocked himself out, we all know the fix was in on the Fedor fight cause the ufc bought strikeforce and wanted him out so the ref saved Dan and another judges error again gave him a victory over Shogun.
I think the facts speak for themselves without roids and judges errors he might not have ever won a fight and definitely not against any top level fighter.