The "magic" in a pro's stroke is consistent accuracy at all speeds, which allows him to play farther from the CB's center and get more action. We mortals try to hit farther from center, but being inconsistent we miscue too often trying to do that, so we subconsciously steer our tips back to safer territory - "settling for" less CB action.
pj
chgo
I'll have to study my accuracy more closely. Mark Wilson measured me at less than 1mm but those strokes were for only a couple speeds. I don't remember measuring at extreme speeds.
That being said I've noticed differences of applied spins at the same speeds with a wristy stroke vs not. or loose grip vs firm or this or that.
I assure you that I'm getting out closer to the margins than most being almost 100% 3Cushion player who also loves experimenting with crazy ridiculous shots.
And for Tony in MD I remember one shot many years ago I made after a tournament session was over and after a couple cocktails. The shot haunts me still. I was just freewheeling, and trying to make the ball spin. I have no idea how I did what I did. Looked like a shot you'd see on YouTube. Guess that one time everything was 110% correct.