The trouble with looking at the glider is that it doesn't consider the
pilot. In the US, the vast majority of top-level pilots own
recent-generation gliders. When they go to a sports class event,
usually because it's fun or geographically convenient, they bring their
gliders with them. This analysis assumes that pilots are randomly
assigned to gliders, which isn't the case.

Try this: relate the position in the scoresheet to the glider handicap
and to the ranking number of the pilot. I suspect you'll find ranking
of pilot a far stronger determinant of who wins than the handicap of
the glider. Or try rescoring the race with any handicaps you like.
Alas, you will find the best pilots still winning. The handicaps
cannot be off by more than a few percent. The margin between first and
(say) 10th is much greater than that.

John Cochrane BB