If the Grand Arena is evenly matched, then you should see more close scores among similar interest players. So in the 3rd round, when everyone is matched against a player with the same win-loss record, are you seeing blowouts or close games? In my guild, we are seeing a lot of 3rd round matches decided by 20 banners or less. I lost both my 3rd round battles from last GA and this one by a combined total of 10 banners (lost by 2 banners last time; lost by 8 this time). Results that close speak to good balancing.