So after completing all 14 bosses on LFR and Flex difficultly I do not see what all the fuss is about with affliction. Comparing my casual raid experience with normal and heroic numbers submitted on raidbots I come to the conclusion that destruction is out-performing affliction on most encounters. There are a few bosses that are clearly affliction favored (Protectors, Dark Shaman, and Thok) and a few that are destruction favored (Galakras, Sha, Spoil, and Garrosh). The bosses that do not have a multi-target dotting mechanic or aoe mechanic seem to be very similar (i.e. Juggernaut).
So much question is, why all the fuss about affliction?