Total Rounds Won:
OMW Opponents Match Win Percentage
GW Your Game win Percentage
OGW Opponents Game Win Percentage
The final standings are determined by the total points of participants. For tiebreakers you first look at OMW% then GW% and last OGW%.
If there is an exceptionally rare reason and all of these three are the same. The last tiebreaker is decided by a cointoss.