that’s not a useful metric though. the science of winemaking isn’t some dark secret. given enough money to replicate conditions i’m sure even saudi arabia could produce a wine that blind tests better than french wines
the point of comparing regions is their average wine: pick up a random wine off the shelf from each region and how comparable is it?
french wine isn’t good by magic - french wine is good for the same reason french pastry, bread, and cheese are also good. because it’s deeply ingrained in french culture that these are things that you don’t accept bad versions of. bad wine doesn’t sell in france. americans are less picky. each wine region adapts to local conditions