The key is using a grip that allows the weight of the cue to do the work and not the arm/grip to do the work.It certainly can't be a one size fits all. Players also have different types of grips as well. Players use from 1 to 4 fingers to grip their cue. I use my second and third fingers with my pinky and first finger hardly touching the cue at all. DiLiberto didn't wrap his fingers around the cue at all. He clinches it between his thumb and finger tips.
I remember an old time player named Gene Skinner telling me the grip, wrist and fingers was everything, it was the motor that makes everything else happen. He by the way is the man who Freddy the Beard credited in his book with him learning the game. When that feel and motion of the cue is right, the game can seems so easy.
Jaden