Two shafts with equal frequency and kick points will produce different spin rates. Heavier shafts will produce lower ball flights and spin rates than lighter ones. Many "tour" weight shafts feel bad to many players because they are stiff and heavy. To lower spin rates you can make the shaft stiffer or heavier or both.
Also make sure you creating true launch angle with your driver. If you do not have enough loft and you have to create it, you can see some high spin numbers, check the side spin numbers to verify.
Listening to the Video where Brian tests which ball to use, some questions arises.
With his driver, his stats are 13-14 launch, around 2800 spin and around 150-155 in ballspeed.
Is this optimal?
Which distance will this produce?
What loft/shafteweight/flex does he use?
Hitting the ball before low point"should" produce more spin......or not? and how does that comply with the above stats?
JEFF!!! where are you man?
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Golf is an impossible game with impossible tools - Winston Churchill