* Floyd Mayweather is actually an extremely tough boxer (both mentally & physically), the bomb landed by Mosley was a KO punch & Mayweather showed us a glimpse of how reacts when his CNS is rattled. Just cause Floyd is also reliant on technical superiority & picking fights, that doesn't mean he lacks resolve & toughness :nono * Amir Khan is physically vulnerable by elite class standards, but he is very tough mentally, with a healthy dose of confabulation that emboldens his mental toughness, but might get himself brutally KTFO if he starts challenging GGG & possibly Bernard Hopkins @168 in the future if he has some success at 160, no Inception intended :smoke * Andre Dirrell is a case of an elite fighter with excess natural talent, who is truly fragile (possibly physically fragile, if his head injury is an actual brain damage & not a Psychological reaction to Arthur Abraham toughness), that is is normal most people didn't evolve the capability to withstand the trauma of punches shocking the CNS, Andre Dirrell pure skills carried him that far, when he reached elite level, he had to catch some return fire & couldn't handle it.
Foreman is actually not as Tough by elite standards, when faced by a the tougher Muhammad Ali, he melted down. Then the religious meltdown after the Young defeat. George Foreman is the perfect bully, as long as he is matched with fighters he can physically pummel, he will never lose. He struggles with mentally ultra-tough boxers that comeback after surviving his onslaught (Ali, Holyfield RD 7)
he wasn't mentally weak, against Ali he tired out badly after throwing away all his strength in the first 8 rounds, against Young he was dehydrated and in worse shape than usually (before his 10 year layoff) Foreman was as tough as they come, there's a reason he was stopped only once in his career
Obviously he wasn't mentally weak, but he wasn't exceptionally tough...Ali, Young & Holyfield, the objection was adding him in the Tough category didn't mean Big George is mentally weak, he just doesn't make the ultra tough category, due to the way he fell apart (mentally or physically) vs Ali & was surpassed by Holyfield (Tailor made to get KTFO by George Forman & was almost KOed, but came back)
Sergio Martinez should get some love. Froch Margarito Soto Miura Provodnikov Morales Huck Murray Lebedev