Well it is tied to difficulty, you need to master your difficulty and never die in it.
So if you could drive a car where you can't die. So if you crash here and there are you better driver than pro racer that never crashed but goes as fast?
HC players know how to play and know what difficulty they can play. I don't have problem with dying, i have problem with my gear not being good enough because i don't grind that much.
More punishing for your failure = higher difficulty
It's like those dancing games where you just said sure i got 1000 points in 5 minute song because i failed a lot but im good as you because you also got 1000 points in 2 minute song where you got perfect combo.
The only thing you've got going is that i can't put moderators to my ignore list for some reason. Because only person who says HC is same as SC is one who never properly played HC.
In HC you don't have luck, you can't just zerg 1000 runs and try to not die in one and get lucky where mobs don't get in weird position where it's impossible to avoid death. In HC you play with your only life.