The rule is clear: “If there is a tie the winner shall be decided by the score” (https://tgs-tourny.darkbb.com/infomation-about-the-tourny-f3/tournament-t1.htm)
So, the third play would be a decision. A draw did not happen in two plays!! There was no reason for decision… Marreira won for 1x0!
In fact, Marreira agreed with Droid, because he believed that the rule was existing. In the end, the rule was created after the victory of Marreira, at the moment.... Disorganization is the minimum that exists here...