Barbarian in Inferno

[Celidion]

I'm simply confused at this point, I honestly have no idea what to do. These are my stats:

648 Resist All, 41523 Health, 5996 Armor, ~20k DPS 5x Stacks of Maniac Frenzy

Even with these stats, I'm still getting massacred in Act II. I know I could have around 800 All Res, 50k Health, and 8k Armor, but that would lower my DPS to nothing. I really want to use a 2h, but do I have to use sword and board if I want to do anything after A1? I don't have millions to spend on top-notch A4 gear for A2, so should I just switch or am I missing something?

My skills are the standard Frenzy(Maniac), Revenge(Provocation), Warcry(Impunity), Leap(Iron Impact), Ignore Pain(Iron Hide), and Wrath of the Berserker (Insanity). My passives are Tough as Nails, Nerves of Steel, and Berserker Rage.

[Celidion]

But I like the melee archetype. D=