To be honest, I play all three and although I've only had time to get on my Titan, I just want to say that while it's a teensy bit OP-- nobody ever really returns fire. Now I can't speak on behalf of the whole PVP community, but I've watched a Stormcaller pop out and I start shooting him nonstop, and get him to decently low health, as about 3-4 teammates run away and get murdered. Had they each put a single shot into the guy for the most part he'd have killed maybe one, two guys. So even if there is a health reduction, I doubt problems would end because people would rather run than dig in.