Grand Arena Championships – GP Divisions [MEGA]

Someone please explain the criteria matchmaking is using and is it working properly? Also is everyone starting out in the carbonite league due to this being the exhibition for GAC? GAC shows I'm in division 2 with a GP of 3.8 million and my arena rank is 46 and ships is 225. When I look at my opponents 6 of which have a GP 4.05 million and the other is listed at 3.9 million. Preying I can get a top 4 finish.