Yeah you have to take the quotes from that thread with a grain of salt since they are spread out throughout the thread. I know when I talked about the fight I was referencing the enrage timer as I think the rest of the fight is perfect. As for soa you are comparing apples to oranges. The DG fight was never cleared pre change without someone hitting the enrage whereas soa was cleared by folks without ever experiencing the enrage.
As for the hm/nightmare differences only BW knows and they still remain silent on the whole issue.