I have notice that on fights like Hodir I am having a realy hard time pushing 6k dps that we need to do 25 man hard mode. I dont know if it is my spec....my class.....or my gearing choices. The World of Warcraft Armory

What I want to know is this.....

Why do I see a such a drop in my dps from more mobile fights?
What can I do to improve my dps on mobile fights?
Last, What is the normal dps output for someone with my gear?
I see numbers all the time, but some are great and some are like "wow i do more than that with Auto Attack".

Thanks for the help in advance.