Different controls may be required for different sticks, but it is the leather tip that contacts the cue ball, and where the leather meets the ball is controlled by the shooter. A flexible shaft may require a fuller hit to avoid squirt, for example. But one can not blame a stick with good leather for a bad hit. It isn't fair to compare the hit of two sticks, with different shaft characteristics or leather, by using the same contact point on the cue ball. Obviously the hit will be different.
Every new stick requires that the shooter make adjustments.
But changing sticks in the belief that the adjustments should not be necessary can get expensive, especially when our shooting techniques mature and evolve by nature. If you want a better hit, make adjustments, and hit it better. More shots are missed as the result of squirt than because of aim. Put a little less spin on the ball and watch your shot making percentage improve. An experienced player can tell by the stick's vibration whether or not the stick flexes too much.