When Fedor was seen as the best in the world many felt his build of being stalky and powerfully built was ideal for MMA. The shorter more powerful limbs were tougher to submit and they made submitting others easier. No one said 'oh poor Fedor that Semmy Schilt is going to reach him to death' because it was thought a more powerfully built Fedor would be able to muscle his way in to the inside and bully the taller lankier fighter. Unlike boxing where being tall and lanky had shown many benefits, the same was not the case or belief for MMA. It was BECAUSE of Fedors build and his ability to use it that he has so successful. does anyone now think that if BJ or Edgar or Bendo or Pettis instead had Corey Hill or Nate Diaz build they would have been that much more dangerous and better? What about Cain or JDS at HW? Would they be that much better with Struve's build? tl:dr - every dominant champ must learn to maximize the benefits and weaknesses of every body style as both exist. And it is the skill that defines the champs and separates them from the masses, not the body style if it was about a body shape/size then we would see that shape/size tending to dominate the top reaches of every division and we do not.