Can't tell because you can't get into a single WZ without the other team or your own using the exploit that gives you 800k+ worth of HP and being able to 1 shot everybody. Plus with the addition of the all new PvP gear and everything, it's going to be extremely difficult to tell until after everybody has acquired the new gear. However just from hunting down the few normal targets I have found, concealment isn't looking too bad, but I would REALLY like to try the Lethality tree because it's looking pretty BA