The Any-Vehicle Average Finish is the average of a player's positions for
each track. The best AF possible is 1.0000, since an average of 1 means that a player
is on average 1st for everything, i.e. has all 64 records.
AF scores reward consistency--a single weak score can negatively affect
you in a big way! Your AF improves when you beat someone's scores. It worsens when
someone beats your scores. This means that your AF score can fluctuate every week.
You need 64/64 scores to be shown. By default, the top
100 players are shown.