TrueSkill™ is a ranking system developed at Microsoft Research that provides an algorithm we use for determining the relative strength between opponents. By factoring in the strength of matched opponents in addition to the outcome, the rankings reflect more than just wins and losses. It’s a more refined approach to determine how squads compare to one another. For a more scientific explanation and a peek at the full equation used, check out the Help/FAQ page. We’ve implemented this tool without any preference given to particular squads or factions.