Originally Posted by Melthu

Brutallus has the minimum 1% chance to resist taunt already, so there's no need to socket/enchant for +hit (unless he's concerned with generating more longterm TPS).

As for stamina vs. avoidance, I haven't done this fight myself but most of the advice I've seen is to ensure you have enough health to survive a Stomp-MH-OH combo. After that some people have reported having more success focusing on avoidance while others claim that socketing for pure stamina has helped them. Testing for yourself is probably your best bet.

Edit: You weren't kidding when you said your druid is focusing on +hit. He's losing out on some major survivability stats by going after so much +hit. In particular, Violet Signet of the Great Protector is much better than Band of the Abyssal Lord. He'd also be better served getting +12 agility on his cloak and moving the +12 defense enchant to his bracers. He could also remove some crit immunity gems/enchants by switching his necklace to Necklace of the Juggernaut, The Darkener's Grasp, or Pendant of the Titans.