Sages and Sorc's are fine,
Get a Pocket tank to stick with you and you'll have a field day being immortal,
well perhaps not immortal just very hard to take down with the tank Taunting and pushing those who attack you away.
Sages are very effective at dispelling other range class's with there CC's and Interrupts.
also effective at stopping melee Class's in there tracks if the right spec.
Yes i play Rated with my guild and when they guard me i make a Amazing Distraction for the enemies Melee to hit me while they kill there healers in the back.
Also when it comes down to Huttball People Want sage's thanks to there pull, it means a instant Score if you pull them to the goal, or a Guardian Jumps to you or W/e
People Don't like most Sage's Coz i hate to say it, there are a lot of Bad sage's i've seen so far in normal Wz's maybe its just that experience people instantly say there bad.