How does fedor remain undefeated??what makes him so good,what does he have that no one lese has??

Let's see for the fact he is the best to answer question 1 to anwser question 2 he amazingly fast agile can throw down with anyone, the best submission man in the world bar none, very hard to take down without him reversing that person ie. Kevin Randleman watch it on youtube. 3rd question very focused like no one else and prepares better than anyone