server capacity has been increased with 7.5 so thats why is has lower number then really is, also dont forget katalam/lakrum is not calculated in the numbers as they are seperated server.
on storm sieges there is around 400+ players each siege.
(calculated with my aion people that does DPS) then there is alot of players that never go siege and remain rank 1. if they had go siege every time they would be min 1*.
as u can see in picure balaurea has the highest number well that is no new news as it is lakrum/dumaha/katalam.
as soon people teleport from gelk/ing they move to "balurea"