Win-Loss-Tie record (W-L-T). At the end of the week, you will be issued a Win, Loss or Tie based on how your 4 category totals stack up against your opponent's. Whoever wins the most categories, wins the matchup. It is important to note though, Days, Strength and Cardio are worth twice as much as Variety. Take the following example:
W-L-T is the most important determinant of overall standings. Basically, above all else, you need to win your weekly competitions in order to move up the rankings. The second most important determinant is "Individual Grade", explained HERE. If two players have the same W-L-T and the same Individual Grade, the final tiebreaker is the player's average Days per week.