Something has to be done for the Berserker Wolfpack skill....
I haven't touched the game in weeks cause I don't have the motivation to try other classes when I know the Zerker does a ton more damage compared to anyone other class.
It's really quite unbalanced... Even with Warlock using any build I can't come even close the DPS Berserker dishes out with Wolfpack.
Then you are doing something very much different then others are, Warlock does more damage than Berserker, however, if you don't have a good PC then Berserker will end up doing more dmg since Warlock is very graphic heavy so you will have a lot of FPS drops which will affect damage. Warlock and Berserker does almost similar damage tho, so it's not much of a difference, average time to kill Rak'var on my Warlock is 18 seconds, and 20 seconds on average with my Berserker.
Could also be that you are using other mods which changes how abilities works/acts etc.