MartinD A semi-random thought that's somewhat related to this subject: You can choose to play with either current-generation clubs and a wound-core golf ball (Titleist Professional or something similar), or early 1990s clubs (think along the lines of the early Big Bertha drivers, and either blades or Ping Eye 2/Zing/Titleist DCI for irons) with a modern ball - which do you think that you would score better with?
I'd say the latter would be best for scoring, but a 460cc driver of today versus a 1990 driver is also a huge difference.
Yeah, the bifurcation path might be interesting, but trying to sell stuff to the masses would be a mess. You can't have Tiger saying "you should buy TP6" and then watch Tiger play a Balata Tour 90.