Not to mention that "better driver than average" is a very fuzzy definition, and more than 50% probably hit at least one of the possible categories, e.g. safer?

Not to mention that "better driver than average" is a very fuzzy definition, and more than 50% probably hit at least one of the possible categories, e.g. safer? Quicker reaction time? More pleasant to other drivers? Most comfortable to ride with? More technically skilled when it comes to difficult conditions? Able and willing to go fastest? Gets the fewest speeding tickets? Etc.