More context as to why I believe highest GP shouldn't win.
If two people end up with the same result (draw) the one with the lower power has had a better focus to get him to this GAC result.
By that I mean that the highest GP player either doesn't use his rooster properly or decided to get characters that aren't as good in GAC.
For example, at my lvl, I see many people going for SLKR or they have SLKR. Those players end up having a rooster mainly of FO which sucks overall in GAC.
I end up beating that guy because I have better synergy overall and have worked on counters for most team.
But that guy has a much higher GP.
It makes much more sense that actually the lowest GP player should get the win.
But I believe this community doesn't believe that the underdog should win.
Therefore I think at a minimum it should be random.