But he lacks the biggest attribute a boxer MUST have heart and determination. He pretty much quit a few times after his team fell behind in a few of his championships. So in my opinion he's not the greatest basketball player much less athlete in history. And besides comparing a boxer to a basketball player is almost impossible. A team sport concept is completely different from a single person athletic sport. Does Lebron win a championship without good players around him? Does Jordan? Rice? Etc. And Lebron has clearly shown he's a front runner, but when the odds are against him he folds, than he blames. That type of mentality would be exposed quickly in boxing.