Now I haven't had the chance to get into Vortex Pinnacle Yet. But the thing that sets me apart as affliction vs. Demo/destro is in the fact that you can utilize 3 different forms of crowd controls in this expansion.
Glyph of Fear, Seduce, and Banish. Now if in pinnacle fear and seduce work. Warlocks can handle all of the CC by themselves and still do enough dps to put smiles on peoples faces. Being damage over time masters and all.
What do you think?
http://www.wowhead.com/talent#IburRhsGcdhbMZc:scMzRamMV
Someone is going to ask why not Demo or destro?
Destro requires an imp for certain procs, and Demo requires felguards to do truckloads of damage. Affliction doesn't.