I was looking at your rankings on the site and wouldnt an Elo ranking system be better then ranking by winning precentages. Percentages only work when theres a small amount of fights. Here in Austrlia and over in yankeeville we use Elo because it is more accurate. Compare our win percentages to where they are placed on the table.
http://rankings.robowars.org/featherhistorical.htmhttp://rankings.robowars.org/featherhistorical.htm
http://en.wikipedia.org/wiki/Elo_rating_systemhttp://en.wikipedia.org/wiki/Elo_rating_system