Hrmm, I guess my experience has been far different. I actually think Moder is the easiest boss and Bonemass the other end of the spectrum. I guess they are all fairly easy, but in the half dozen times I've fought Moder, he's been even easier then Eikthyr using proper tiered gear for when you're doing the encounter.

I'll admit tho, I don't do a lot of melee on Moder. Mostly just poison arrows, an occasional fire arrow for the DOT.