It doesn't matter what brand of cue, what weight the cue is, what joint type, the shaft brand, the shaft stiffness, the shaft taper, the tip brand, the tip hardness, your aiming system, and on and on. You can't buy a game. When you miss, it is because of bad/inconsistant stroke mechanics and bad tip accuracy. What matters is your stroke mechanics, your tip placement, your speed control, and your discipline. The rest is product marketing. Work on your fundamentals again and again and one more time. Always. The rest is bullshit..
Ever consider that folks buy nice cues for other reasons ? As in not in an attempt to "buy a game" ? I certainly do.
I also believe that various elements you poo-poo partially determine the squirt and throw characteristics of a cue, and as such influence your ability to execute specific shots. Maybe you hit center-line always and do not concern yourself with these issues, but not everyone does.
And I can't wait for some to notice the "your aiming system" comment

Dave