Bob,Dr. Dave, or Cornerman, maybe you can correct me if I am wrong on this....
I believe that strength is actually detrimental to how much draw one can achieve. Hitting the cb hard, which requires strength to do, gives the cb a tremendous forward force. That force must be overcome before the cb can even start to come back with draw.
Now, on a dead center hit of the ob, the forward force of the cb is transferred directly to the ob. The cb stops dead and then friction takes over and moves the cb accordingly to how much spin is on it. (this can be shown with the old penny trick of slamming one penny into another on a table top.)
However, on an angled shot, the harder the cb is hit, the more the cb will travel down the tangent line before the spin can take affect. During that elongated time frame, spin is being lost, resulting in less draw.
If one were to hit the cb very fast, but not hard. Meaning, putting a lot of backspin on the cb with little forward force, the cb should draw farther than if it was hit hard with the same amount of backspin put on it. With the exception of a true dead center hit.
What I am getting at, is strength gives you direction force. Speed gives you rotational force. For max draw, rotational force is what you want.