The only fight I have trouble with is oden, the dragon in dht and cordana. Everything else I am usually #1 at around 180-220k if not 2. Wrath I just used s2m because fuck it 9m+ more damage than #2.
It's not because better than average on wow isn't saying much. I'm not saying I'm god's gift to wow, but if I did as much research as I did and still performed bad as any class, that is a skill issue.