For some reason they allowed alot of information to be stored and used client side and not on their servers.
I still think it is cosmetic, as data would be streamed from you to servers and then to other players for them to see your damage also. So doesn't make sense to be honest.
Again though I would advise people not to try it just in case, it is an MMO after all.
[Edited by DABhand, 5/12/2013 4:46:09 PM]