I use CE in pve on mobs and they take less than 2k damage each, it's very minimal AOE dps in dungeons and with such a small single target "burst" to it, I can't imagine it does that much damage in pvp like people think it does.
Someone told me it does 7-10k in pvp and that's not been my experience. In PVE I can see clear as day how weak it is.
It's questionable to blow up my ghoul AND spend 40 Runic Power doing so, just to do 2-3k damage when a Death Coil would have a better effect.