How does the ranking system in Grand arena work?

The tie breaker is gp. So initially, all 8 are ranked by gp. After the first round, the four people with 1-0 records are ranked by gp, followed by the four people with 0-1 records by gp. So you have the 3rd highest gp of the four people who won round one. After this round, the two 2-0 records will be ranked 1-2 by gp. The four 1-1 teams will be ranked 3-6 by gp, and the two 0-2 players will be ranked 7-8 by gp. The winner of the 2-0 match will end in first place. 2-4 will be the 2-1 players by gp, etc...