Great vids Paul. Im about your vintage so have also been through enough fads re crockrt equipment and bats in particular to know and understand what youre saying.
No pro in the late 80's would have been seen dead with red wood on their blade.....
There was a time when I was a young lad that the pros wanted fewer grains that what is desired theres days.
However, in your first vid when youre knocking the bats with the ball you say something along the lines "not much difference in performance between g1 and lesser grade"
So not much difference, but some....
Ive had some lower grade as net bats back in the day, and occasionally some were real flyers and became the #1match bat, but atleast in my experience, whilst I dont dispute at all that lower grade bats can certainly perform, they dont quite feel as good as a pure g1 (assuming the g1 also performs and hasnt been mispressed into a dud) naturally feel is very subjective.
Not much difference, but some.