Brother you're crazy playing on HC. I'd punch my damn monitor if I died on there. Right now, people are getting killed by a bug, fighting Azmodan as the world boss, where other people's mercenaries are killing other players not in pvp areas.
Yeah that bug hit me last night; also hit my friend just before.
I had 1.4mil toughness (effectively max armor/res, 40% dr, 100% block chance, 22k fortified life, a 9k barrier)
1 of those corruption meteors hit me and instant pop.
Any meteor (including from other players), can damage you.
I could be wrong, but I think it has something to do with damage scaling based on the player it spawned for not whom it hits.
I never hardly even had my barrier broken (except for those flying swords)...
Everything else has seemed pretty fair so far this season.