>>535581557
First round is popularity x grinding to earn points. The percentage of points each team gets is their starting score.
The more you personally grind the greater the odds you get selected for the second round.
Second round is 100 players from each team competing. Each win is +1 to score, the team with the most wins gets +30 and the team with the second most wins gets +10. So, essentially, the second round is worth way more than the first round.
There is no third round. The ??? was just so they can have a reveal at the end, since otherwise you'd know the result before it ended. (Though it was obvious Kuon was going to win anyway)
The teams that went 1st 2nd and 3rd in the first round went 3rd 2nd and 1st in the second round so the team that won the first round shit the bed and wasted their lead while the team in second wasn't far enough ahead to steal the win.
People are claiming it's rigged but there was no need to rig it because the ugly male card's class is meta while the cute galge card's classes are the worst most unplayable classes in the game. Up to you whether or not you think that's a coincidence.