bah, quit complaining. Yesterday i did a 600k healing and i think around 3 deaths in novare coast as a sorc healer. All you need is to time your sprints and cc breakers right. Also, try and make them interrupt dark infusion, pop ur relics and spam the crap out of dark heal. Stand in revivification, dont consume when people are on you and most importantly use your stuns and knock backs on potential threats such as marauders, stabby ops and spammers. Don't just stand there taking the heat, LOS.
The nerf is nothing compared to the expertise nerf on healing boost by the way. Sorcs have always been squishy, this changed nothing. Now you get around 21% damage boost and 11% healing boost, makes it a hell of a lot harder but if you know what you're doing you're gonna be fine.