This is always open for discussion.
In regards to experience
I have a non rb tro just managed to get 130.. but too bad... its not shown in the list...
i have a friend who have higher exp in lvl 130 and he is shown in the list..
As discussed, this could also
In regards to duration online
I have friend whom seldom online after lvl 130 (playing with other char), he is also in the list..
In regards to equipment
I have full 2soc friend lvl 130.. their name also not in the list.
haha... so i really don know the answer to it.. thinking of it as random selection, i always notice the same char name in the list..