A pitch that misses by a foot winds up in the middle of the plate or wild. The standard for top pitchers is inches. 1 or 2. Movement is important but even that has to be controllable. A fastball that moves 7 inches from the outside corner in, winds up being a meatball. KC baseball, mine had the same problem every spring, worked tirelessly on balance and mechanics. Balance being the most important. Only a fool builds a house on sand. Maddux and Glavine may have been the best I have ever seen and neither one was a fireballer. Velocity allows you to make mistakes and get away with them. Late movement allows your mistakes not to get hit quite as hard. Location allows you to work the hitter. All three make you a hall of famer.