Quote Originally Posted by rewd View Post
Sage is not the most popular healer, it's the new healer that came out roughly two weeks ago. We will be able to talk about popularity in a meaningful way in the future, not now.
Well, it currently the most popular healer in endgame content by a wide margin.

That may change, but that's what it is now. And that it's in endgame does suggest it's not a "level it and leave it" job as people have been suggesting both before and after launch.