aint the whole point of ptr is to add/subtract as you go along? the creators are still tuning the gear so it is a sizable difference between blue H and Epic raid gear...
ZG currently drops nothing and ZA currently still drops level 70 loot from what I've seen. We probably won't see loot for either instance until a later build. My bet is maybe next week at the earliest. When the loot is known, Boubouille will post it on the front page and it'll be all over the forums.