I do think it needs a small nerf. If you take a look at the damage you received he wasn't actually using the full combo - it's missing a further 2k damage from BL and BA. Misery's end too but the animation on that takes so long it's pretty useless. It's just a no-brainer burst. You just put buffs up, make sure you have the CD's and gg; if the healer isn't prepared it's a guaranteed kill. It takes no skill whatsoever aside from just choosing the correct time to do it. Something that easy to pull off every 90/120 seconds should not be doing that much damage.

It should be about returns on skill. The more skill you have with the class, the more damage you should do. When someone says "Wow that's a good melee/MCH" you know there's a degree of skill the player has which can't be achieved in one conversation. When someone says "Wow that's a good BRD" they actually mean the BRD hoards all his CD's until barrage is up.