Vercure is not very useful in Extreme or Savage content. A 8k Vercure on another player isn't going to save much in a pinch. I mostly use it as a self cure if I'm below 12k and a big AoE is going off or something. You're seldom going to save a tank from death as most autoattacks do well over double that damage of Vercure. It really is an emergency heal.