I've never got surprisingly hit by an AOE. Maybe my net speed makes it easier for me to dodge I don't know. But either way whenever I have got hit by AOE I knew that I was slow or got tunnel vision. I think a lot of people are trying to use "lag" or "crappy servers" as an excuse to their bad skills. Everyone in my guild used to say the same thing, after 5 or so raid days focusing on just Titan now everyone can one shot the whole fight without anyone getting hit by any aoe. That makes me believe that it's really the players skill and maybe learning curve for new MMO'ers.