I think your looking at the fight the wrong way, I dont how what kind of gear or stats your DH have, but as we all know they are born squishy, but imagine since your playing 4 player, that you've sacrified a lot of All Res and defensive stats to gain more DPS. So I dont take your statement for very much when you say they hit hard on "you". I'd imagine your Barb and Monk could easy take hits from them :).