Well, I believe that would be the case if you played with the cue long enough that you end up shaping the cue and remembering exactly how the cue feel and hit. Ginky had played with a tascarella conversion that I sold him and he logged so many hours on the cue that he mold his personal taper into the shaft. Tips changes but he always play with a specific radius. I would think that it not how the wood changes and remember but how the player shape the cue through plays and become attached to the cue. I also have Ginky old Skip Weston Jump Break that he had for a long while and you can also see that it was worn in wrap area from hours of used. It's was apparent where George hold the cue when he's breaking on this cue. Also, I remember Gerry Watson, "The Ghost", tell me that he had his meucci cue for 30 years and the cue is basically an extension of his body and more importantly his mind. It all come down to familarity, hell I still play my best pool with my old Weinstock cue and still have not found any that will play better well maybe the Gina I have but it's take me another 5 plus years playing with it to compare.
So in conclusion, playing longer with the same cue...generally equate to the cue playing better, sounding better since you're able to recognize the tonal sound from a variety of shots, better speed control and positions...as Gerry said...your mind is attached and understand the variances in your cue.
Duc.