hitting how much above center for a shot a little more or less changes everything just a little. but a dead center hit is the easiest hit to make and be accurate with it.
and hitting higher or lower changes that effect after it hits a rail.
but of course many shots do better with high, low, or left, or right. and faster speed, or slower. i get that. and am not saying not to use anything but center ball. but that will be most accurate for most shots. but may not be the best choice for certain shots.
although, each of those changes where exactly you hit on your kick for most kicks.