Well the higher resists certainly don't *hurt* Obviously they help survivability rather than hinder it.
From experience with my avenger, they has no problem killing in hell. His problem is primarily that he occassionally has to run away from large mobs of enemies as they tend to club him with things that take his health down. I am not sure how this compares to other fighter character classes. The only other class that I have played in 1.10 is a summoning necromancer (which tend to be nigh indestructible). Also, I don't care for all the clicking required of avengers.