Ok...one is slightly confused...when I enter the battle arena (as in join) it calculates my att/health/def for the arena but if i level up then add more skills points to att/def or health..will the also be added to my battle arena set up or not???? so is it best to enter as late as possible??..If I've confused you then good because I think i've confused myself also.
It was that way for the first arena,it seemed to me , that it was locked in, at least the in PC one, but I believe it was changed and I checked it out when joining the second and third one and after joining, I was able to up my def , attack etc with skill points and limited items .
I believe Linda is right, Initially it took a snapshot of your stats upon joining but was later changed to taking a snap shot when the arena started