I'm a huge fan but the reality is Fedor had the luxury of taking a few squash matches during his career, fights like Zulu, Valavičius, Nagata and Ogawa shouldn't have happened. They simply didn't belong there with Fedor.
However, it was a different era, people fought more often, you didn't always know who you were going to fight, you might have to fight a few times in one night, the sport had far less regulation. Fedor had more fights in 5 years than many heavyweights have in their entire career but todays HW's are fighting more consistent competition once their at the top and the reality is, we don't know what sort of PEDS Fedor was on. Under those conditions, Fedor was able to thrive more than any other HW and was truly the best era and as of today, currently still holds that title.
I would say Cain or DC shown that sign of dominance and promise early in their career but Cains career was riddled with too many injuries and DC decided to drop down a weight class.
I think we'll see a HW that dominant again, eventually some freak wrestler who's 6'5" with an iron chin and endless cardio is going to rag doll his way through the competition but who knows when that will be, may not be in our lifetime. Certainly won't happen until the UFC start paying their athletes more fairly and start scouting better talent.
