Weak analogy. Football players play completely different positions on the field. Of course a right guard can't run like Adrian Peterson, because his job is to block while Peterson's is to run the ball. They're not performing remotely the same functions as part of the team. All wrestlers go out on the mat with exactly the same goal, to take their opponent down, turn him, or escape from or reverse him if it comes to that. And they all have the same techniques at their disposal to reach that goal. Like I said before, the basic set of skills that all wrestlers should have, regardless of the "power" of the upperweights or the "quickness" of the lower weights, is the same for everyone. And those skills are seriously lacking in the upperweights compared to the lower and middle weights, on average.