Nobody seems malicious in their comments. I'm a bit skeptical myself but more than willing to be proven wrong. I seem to remember a shaft playing like that but it's primary flex point was behind my bridge hand and I hated the feel of the shaft. Anything is possible. As has been said, wood is wood and no two shafts are identical. The shaft may have a trait that can be copied, it may not.
Putting it on different butts would be interesting too. The first very low deflection "shaft" I ever shot with was my one piece twelve ounce sixty inch snooker cue. That thing was awesomely low deflection on a pool table hitting pool balls. I think the light butt section moving easier had something to do with the low deflection. The effective mass of the tip area was lower than the effective mass of a shaft on a heavier butt section.
Hu
I collected a lot of used butts and shafts years ago...I was looking for the perfect cue.
..I finally chose two butts and seven shafts and took them to a cue maker.
...got two great snooker cues out of it.
..one shaft belonged to the light butt...one shaft belonged to the heavy butt...
..the other five were practise shafts....can’t explain why.
Byron Nelson had a similar experience with golf clubs back in the day.
He was known as having the first modern swing...chose his clubs by feel.
They named the swing tester after him...”Iron Byron”
...his clubs were finally tested using this method...all his clubs were matched except one..
..it was either the 4 or 8 iron...he said he never could find one that suited him.
I feel the billiard world is in the pre-Iron Byron period...we either find the cue that suits us..
...or learn to adjust to a cue,
We’ve come a long way...but not everyone agrees to what makes a Strad great either.