[quote] It's possible Bungie does some other "off the books" analysis on your gamertag...maybe things like EXP, total games played across all playlists etc, but only applies minor importance to those numbers.[/quote] That may be the case because the trueskill explicity states it doesn't take into account in game performance. Me going +20 versus some of the lower level teams while I was leveling up should have no effect on my level progression.