Commando is the PVP healer as sage and counseled don't come close to our healing or survivabilty. Let's start with armor, we wear heavy and compared to an equally geared/leveled player just with that gear I am mitigating 18% damage versus medium and 26% versus light - so now I'm not taking high damage. Next, LoL @ your hots as you have to wind up three stacking and another ability just to make it powerful enough to be effective. Now your cast heal is comparable you can't even come close to bombing as long as we can and run out of juice fast. That brings me to my next point, we have the highest burst HPS going, if I don't want someone to die chances are they won't unless that team has 4 people on my target and unlike the sage it doesn't take us 7 casts to get into that mode as Commando we literally change target(aka turret) and bomb away as we save that player immediately. Here is the MAJOR bonus for sage - heals on the run. You can heal on the move which is incredibly valuable in PVP and should not be overlooked.