I'm all out for affliction. Insta howl of terror FTW, UA FTW, CoEx FTW!!!!!
I think I can win all in most duels EXCEPT THOSE DAMN BM HUNTERS WITH THEIR HUGE RED PETS THAT ARE IMMUNE TO EVERY #$%$%@#$# THING ON EARTH!!!

Problem with fearing in instances is that mobs are often close together and you get a high risk of getting adds. But we are definitely great CCers in BGs, succy charm one, chain fear one, dot up a whole group of people, esp with siphon life and corruption. If you're affliction, after dotting them up, nightfall will proc like crazy, just life tap and SB. Best if you can find a bush to hide in, LOL, that worked for me pretty well in AB.