Concealment Ops need a nerf. When bolstered in a warzone my then lvl 36 guard (spec'd fully tank and had level appropriate gear) would be destroyed in 3-4 seconds by an op that was a lvl or 2 below me. My skill to break stuns was on cd so all I could do was watch. I was crit for about 7k in one blow. By the time the stun was up I was down to about 20% health, and when I could start swinging they of course stealthed and ran away, most often coming back before I can recover to finish the job.
For those that say l2p, any other class I can hold my own against in pvp. Also this is not the first MMO that I have played as a tank either. Fact is the class needs a nerf in some way for pvp. Maybe adjust how much their primary and secondary attributes get bolstered would seem the easiest way without breaking anything for pve.