A shaft in itself cannot be more "accurate," it can be more "forgiving," but not accurate. Accuracy comes from your aiming, and your stroke, not from a shaft.
Again, missing less shot and playing better position are two different things.
To play better position, you need to be able to hit the cue ball where you want to hit it, and to have the knowledge of how the cue ball would react when you strike it at different position. You also need to have a stroke to move the ball around the table consistently. What it all comes down to is the fundamentals of your game, not the shaft.
I know why you are saying you will not miss as much, because that is how you feel when you are making shots with spin which you could not make before with a regular shaft, so you think the 314 is better. But the fact is you could not make certain spin shots before because you were not good enough to make them. The pros like Archer, Rempe, Hall, Fisher, Corr...can make those shots with a convension shaft very consistently. Therefore, a 314 shaft will not help them to miss less.
One more thing, the butt of the cue and the balance is very important to me. A good balance allows me to accelerate the ball and to keep my cue stable through my stroke, a better constructed cue gives me more consistency and a nice feedback--at a higher level,these are more important things to look for.
Let me put it this way, if my cue throws the ball the same amount everytime I hit my ball at a certain spot at a certain speed, then that shot should be controllable. If you cannot control it, it is either because your cue does not produce the same amount of throw from shot to shot, or that your stroke is not consistent.
A 314 shaft does not make you miss less. But if you were not good enough to make certain shot, the 314 is more forgiving to help you to make them. However, why is it that you could not make those shots in the first place? It is not the shaft, it is you. The problem is still there whether you are using a 314 or not, it may make you feel like you are playing better, but it is not true.
Lastly, the pros got their 314 for free, some use them, some don't. Other than Alex, which world champion uses a 314?
Tiffany