Been reading all the manufacturer claims of distance achievable with golf balls and golf drivers. Remarkable - its a wonder we aren't all scratch players !!
Just wondering - is there an official body that robot tests drivers to prove which hits longer. Same with balls ?
USGA tests whether clubs conform but not whether they perform.
Some golf magazines sometimes do a comparison test of some clubs, but that's hardly comprehensive.
The real question is whether a particular club with appropriate weight adjustments, shaft type, etc. will perform better for you than another club. For that you'll need an experienced club fitter, not a shop salesman.