why am I pulling so bad dps?????

hello guys.
in struggling, and I didnt know what to do as ive tried every thing. Ive spammed slams and slams and even some more slams. inbetween those slams ive spammed heroic strike, and ofcourse maintained a 5stack of sunder at all times. Why am I pulling so low dps???
here is a link to a halion fight recount (Eto)
http://i.imgur.com/6Rrt8Ek.png
please help me develop as a warrior, familia!

PS: I think I have more recount screenshots of some encounters on my pc.