I used to know Scott Vick who was Sick boy in WCW and later WWE. I guess he was a pretty tough guy and didn't back down from much.
We got on the subject of tough wrestlers one time and his exact words were, "I never back down from a fight but if Meng came at me I WOULD RUN, and I know I am faster than him".
I asked him to elaborate and he said "just because".
I reckon most thought that way according to him.