Beyond just the ability to take a punch. It seems certain styles or ways of doing grappling translate better to combat/mma, regardless of the grappling art. So some elite amateur wrestlers just cannot make that transition but dominate their owm sport. Same with some elite Judo/BJJ guys...some adapted great to combat others are elite of the elite in their niche grappling art but get worked when they try to fight. So what are the technical variables that determine ability to transition from any grapplin' style to fightin'?