Actually its not, it's to test the Cross-Realm BG Content, if it was on pvp, they wouldnt have given pallies, priests, shammies, and druids healing gear.
They said themselves, even though the PTR have the world pvp at silithus and EPL, they want you to focus on the Cross Realm Battlegrounds, they said themselves this is not a PVP Test, its a PVP content test, so rogues just get to own people with healing gear, lol.
Ghan has said he has fixed this. Monovertex please confirm this fix. This was only a problem with people that had signatures in the upper levels like not the special members but the respected members.