I think that's a bit unfair mate, Rahman basically won with a lucky punch and Douglas beat Tyson who was a bit of an enigma, grossly overrated and lost plenty more fights afterwards. Fury didn't win with a fluke punch, he won a unanimous decision over a 10 year reigning champion in his back yard. He's also unbeaten, neither of those pair were.
You've made it abundantly clear you really don't like him as a person, or even respect him as one (or maybe that was that Mohammed Ali, Frampton or Khan, I can't remember but I know you don't like them either!) and you seem to be letting this dislike cloud your opinion on him. I don't think anyone's ever said he's a 'great' boxer, or a hall of famer or that he'll even be talked about in the same breath as the Lewis' or Holyfields of recent times but for god sake he was good enough to do what he did when no one else could. And in the sport where so many talk themselves up as he being future champions etc, against all the odds, he went out and backed up his talk when we were all thinking he's just another guy talking the brown. But for years he said it, and he actually went out and did what he said he'd do, and for that alone I take my hat off to him.