in my pvp gear (which is pretty crap btw), i go up to 18k armor (about 60% damage reduction to melee), mixed with 6% effectively resiliance for 30seconds, 50% reduction to pretty much all CC and actually fairly good abilities, it does have a good purpose in pvp.. sadly until lvl.80 you won't see it at its full extent as currently at 70, everyone can now nuke MASSIVELY hard, so all they do is wait for it to wear off and then burst you down. so currently destro is supposedly giving the best pvp utility.. lol