As simply stated by Utopian, “You are chasing the wrong thing”. A test is just a test. It may or may not have meaning for you. The goal is not to cut hand held or arm hair, but to shave… your face.
Many a race car performs superbly on the Dyno, but fails miserably on the track. Why?
The Dyno only gives you a result of one factor, as may do a hair test and that one section of the edge that did or did not cut hair.
It also says nothing of the main factor… the driver.
Can one hone an edge with a 4/8K Norton and achieve a very shaveable edge? Yes, absolutely… very well.
Cut your hair? Maybe…