"Armour" feel useless for HC

Yeah... I play hardcore only... so getting one-shot from a lvl64 physical dmg boss when I'm lvl 87 and have 17k armor and 3k+ life isn't fun. It shouldn't be possible if the math behind the game design made sense.

But the issue raised is not about lvl of gear, it's about the fact that the way the math works, it doesn't matter how much gear you have. Your armor effectiveness is nothing if the slam's damage is big enough. Just from a logical perspective, my armor should still protect me from a large slam. If the game displays that I have 75% physical damage reduction, I should get 75% physical damage reduction. No matter what size the hit is.