To go back to my baseball bat analogy, you practice your swing on a tee, you take soft toss, you take BP, etc. Very little of your swing training comes from live pitching. If all batters ever trained against was live pitching, the analogy is that there would be fewer power hitters, most swings would be really level, and the power hitters that exist would all be relying on brute strength.
The fact that batters take so many swings in non-live pitching situations does mean their swing falls apart when facing live pitching. Their muscle memory simply takes over, and their only thoughts are to hit the ball. Same goes for Shou Shu. You won't be thinking about any complex shit if you had to fight. It would be instinctual as boxing, only the techniques would be more advanced, powerful, and diverse.