number of games played and won are the two most important factor for true skills, number of games being the most important. I have a win percentage of close to 80% in trials, most of my kills are sniper headshots and I finish most of my matches with 2+ KDR (with odd flop every now and then which brings my average KDR below 2)....but my trueskill ranking is only 25-26 because I haven't played as many matches (some 300 trials matches vs ~2400 of FarNorthLegand who is the highest ranked trials player)