Aff warlocks are wild when it comes to survivability. I just hit 110 on mine and am only like 860 item lvl, but I'm able to withstand large groups of mobs on Argus.As an aff warlock that has a tank pet (infernal) and a constant stream of self-healing with healthstones, phantom singularity and drain soul and cant be dazed (demon skin) I try and keep in mind I'm having a way easier time then most.
I do see people dying all the time. We get faster mount speed when we discover the whole map