dave,
many players with wood shafts dont have the issues that supposedly makes cf better. like cleaning it, smoother, warping etc,
also most that have played longer do not have issues with deflection as we compensate naturally for it. and also don't use such extreme one and half to two tips of english like in your testing often. i notice newer players think its fun to use that much, although most times its a mistake.
and your testing most cf shafts are much thinner than used by wood shaft players which makes deflection smaller just by front end weight .
and cf has a long pivot point so if you have to use back hand english which you do on some shots even with cf. its almost impossible to be accurate with more than a foot and a half bridge length.
so there are plus and minuses to both. as we all know. and to each his own.
but i would like to see a video of a comparable cf shaft with the same diameter and taper as a wood one, against each other .
in other words a say 12.5 wood and 12.5 cf shooting, with the wood shaft back hand english at its pivot point. and cf at parallel. and how accurate are the shots for an individual to pocket the object ball. that's subjective, but super important.
but i can see that having a cf shaft second cue with you for shooting long hard english shots could be worth while.
thanks for reading this dave.