"A lot more"? Where is your scientific evidence for this?As a note, those J Flowers carbon fiber shafts deflect a lot more than other LD carbon fiber shafts, especially the Revo or Ignite, they are more akin to a standard wood lower LD shaft like a Players HXT or early Predator 314s than a newer LD shaft.
This is just my opinion, but I feel it is correct based on the physical properties of carbon fiber and wood...
Honestly, to measure RELATIVE deflection between carbon fiber shafts under different brands is almost impossible. Even Dr. Dave here, who has done a really good video on the subject, still has the human pool stroke to contend with. Unless someone invents a machine that can be calibrated to deliver an exactly perfect repeatable stroke, delivered to the exact same spot on the cue ball, with the exact same speed and perfectly replicated ball placement, this statement really can not be proven. There just isn't enough difference between them to measure without instrumentation.
Do CF shafts deflect less than standard maple shafts? Of course. You don't have to be extremely precise to see this. No machine needed. But to measure deflection across a series of say 3 or 4 CF shafts, all of which have very similar physical characteristics in manufacture, would be almost impossible. About the only thing that would likely make a really big difference between them would be different tips. If all test cues had the same tip, I don't believe there is a way to measure the difference between them and quantify that without significant mechanical consistency in testing. Even if you did that, I don't think any would perform differently enough in a human hand to change a player's game verses the other CF cues.