People like you (player that play by the start of the beta) still die on gc because they think that supp is not necessary or "50% heal is enough".
Think what you want, but developers is just kind to give the game these easy boss mechanics.
HAHAHAHAHAHAAHAHAHAAHAHAHAAHAHAHAHAHAAHAHAHAHAHAAHAHAHAHAHAAH
How do you die when they do not hit you? xDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD