Nothing wrong with my methodology, the problem is with your comprehension.
You getting away from the statement you made about 80% of the velocity coming from the body (hips, torso).
You're wrong, and by throwing the way I described proves that. It's at least 50% from the arm.
"Throwing like a girl" is just a poor way to throw a ball, it's not how people who reach high velocities throw, and to compare that to a high level throw is just nonsense and wordsmithing on your part.