Originally Posted by The President
That WBC title was a joke, and your missing one critical factor here. Lesnar was beating and being extremely competitive with the best guys in the division.
Lesnar gave Mir a great fight and then beat him in the rematch. What boxer has ever beaten one of the best fighters in the sport in 3/4 fights? It doesn't happen, because the gap in skill and experience is too large to overcome.
As we've seen in the UFC Heavyweight division though, a good wrestling background couple with sheer size can win you a title.
But they're still guys winning big 4 titles (in most cases against decent opposition, if not world beaters) with only a handful of professional bouts.
And once again, while seven bouts as opposed to three or four, Spinks did beat Ali with remarkably little pro-experience. Yes, it was old and shot Ali who was little more than a thin shadow of what he had once been... but still an Ali who hadn't lost in five years and 14 bouts.
As I say... it's a rare occurrence... boxing, especially modern boxing (despite the success of the likes of Shumenov, Rigo and Ioka) doesn't have examples like Joe Warren who come into MMA and within months have beaten former WEC champ (and at the time 11-3) Chase Beebe and immediately follow it up by beating P4P entrant KID... and beyond that over the next two years go 5-1, including beating some pretty decent names (albeit with the help of sympathetic judges). But it does/did occur.