Frazier was the epitome of a boxer... just a different type of boxer... Smokin Joe wasn't a "brawler", who just went balls out and threw haymakers all day like Shannon Briggs or someone. Joe had a unique style, that of which no one has emulated since his time. moving his arms and head constantly to roll punches off and ducking and bobbing to get inside position.
Frazier was also renowned for his body work, "kill the body and the head will die" - Joe Frazier. Frazier's body work was something special, his power was rivaled by few, and his only dominant loss was to Foreman.
Your facts about the Ali fight are also wrong... They didn't stop the fight because of the fact that Ali was ahead on the cards... most people will tell you today that Ali would have only won by 1 or 2 rounds, and there was a big chance of the fight going into a draw. the trainers stopped the fight because Frazier was completely blind and had lost all ability to defend himself. Frazier had dominated Ali in the middle part of the fight, and many thought that if Ali was going to win, the last round would have been the round that gave it to him.
I believe Joe Frazier won that fight, and if he didn't win that fight, then its nothing more then a draw, and there's the one clear reason why. before the 15th, when they both went back to their corners... Ali begged his trainer to cut off his gloves, he didn't want to go back out there and fight Frazier, he was exhausted, physically destroyed, and had lost the will to even fight. on the other side, you have a man who is blind, exhausted, and has nearly been beaten to death, and the only thing on his mind, is fighting that last round. Frazier didn't want to stop, and begged the ref to let him fight in the 15th, begged his trainers not to stop the fight, but they did.
You have Ali, who has given up, and you have Frazier... who is still trying to fight, despite the fact that the man is blind. (for those of you who didn't know, Frazier was already blind in his left eye before the fight. so to start out with, he was fighting Ali with one good eye.)
Frazier is the epitome of a warrior, he wasn't ready to stop, he's still angry about it to this day, on the other hand, you could see it in Ali's eyes when he found out they refused to let Frazier come out for the 15th, his eyes lighted up in amazement and relief.
so in the end, you have two guys, who have the fight pretty much a tie up to the 14th or 15th round, and if anyone has a lead, its one round to Ali... Ali is ready to give up, the entire staff has to stop Frazier from fighting... Heart means a lot, Frazier was a warrior.
Frazier's career has been largely overshadowed by Ali's because of the fact that Ali had so much media attention, political attention, and love from black America. Ali had also done a superb job in making Frazier look as if he was the white man's champion, which took a lot of money and popularity from Joe because of the times.
Frazier deserves more then an "honorable Mention" The Man was one of the greatest heavyweight champions of all time, and he was never truly bettered by your #1 champion of all time.
To put boxers such as Larry Holmes, Lennox Lewis, or Mike Tyson on that list without putting Smokin Joe on it, is nothing but an insult to boxing.