lol.
In an endgame situation where every class has BM the Sorc is right on the verge of being completely meh. In a premade or 4v4 situation I would pick another class over a sorc almost every time. Sorcs don't heal as well as Merc healers, and Sorc is completely pad-aoe dmg. They lack any type of burst a Merc/Commando or rage-spec Jugg/Sent get. While there are classes that are worse (Mara, Sniper), the Sorc is pretty under-whelming in competitive high end pvp.
Max geared-out classes that are far, far superior to Sorcs: Powertech, Jugg and Merc.