Agreement on criteria for GoaT will be just as elusive as agreement on GoaT. Different people value different things. Personally, I view title defenses as the first criteria. As champion, every contender in your division is game planning for you long before they face you, studying everything you do. By definition, everyone you fight is among the best in the division (there are occasional exceptions). Racking up defenses, in my opinion, is the hardest thing in MMA, and thus should be weighted accordingly. Winning a championship in two weight classes, while impressive, isn't the same. For one thing, most two-division champions did not have to beat any, much less multiple contenders in the second division to get their title shots. Second, some were simply not afforded the opportunity. Aldo, for instance, was told he would have to vacate his featherweight championship before he could challenge for the lightweight title. Now, it sometimes seems like nearly every champion gets the chance to try for a second belt.
