So, which part of "ignores all defenses" you don't understand? Honestly, CW is the most broken class in PvP. Once people realize that all rogues have is their daily and other than that they're punching bags CWs will get all the qq they should. Everyone cries about shocking execution critting for 20k when they're 15% hp and…
If all you care about is the dps meter you could just Blitz facing away from your target. Why waste a slot on such a poor AoE when you can bring something useful is beyond me though, unless you can't live without the 50k damage you will get from path of the blade in the ending table.