The spec threads are dedicated to general theorycraft discussion, not individualized help and log analysis. I'll move your question to the "simple q & a" thread, as that is a more appropriate place for it.
You may get the help you need by visiting the #acherus irc channel though, as that's something they regularly do there. You can find some easy ways to access that chat in the sticky post.
These are Feng HC tries (none ended up to a kill) and the DK in question is obviously Mollywhomp (me) (the other is Blood). Can you find the reason of such low damage done or is it normal for the gear? I would like some suggestions please.