**Recoil is the key.
During the swing, the shaft loads then unloads, causing it to oval. It's this ovaling of the shaft walls that creates the spring effect which adds extra energy to the shaft.
The results are better feel, heightened accuracy and improved distance.**
And the AV weave is tighter and thinner, to help prevent shaft ovaling and improve energy transfer.
π Statements from 2 of the top companys.