I believe "won rounds" is computed incorrectly. I think it's adding up both players' won rounds instead of just considering them a team. Check it out on the current T17 cup:

Maybe in this case the Won column should be "1/2" for blitzed/Aladdin? And if the bo3 had been 2:1 instead, then it would be "0/1" for Mablak/dario?