A majority of this fight is BL/Heroism, my statement upon reflection isn't correctly worded. However for this fight it is as you will do most of your damage through BL/heroism and then if you have terrible dps you die from the cold AoE. He needs to maximize his dps and I was trying to help.

Quote Originally Posted by EJ
If used on single-target fights in every rotation, CL should not be used during EM or Heroism/Bloodlust as you end up with much more "GCD waste."