So far as I've learned hunter self healing doesn't even sacrifice damage, did a couple skirmished (yes just skirmishes I know) and a hunter I paired up with healed 3 times as much as my offhealing which sacrifices a great deal of damage (I'm a paladin)
Not to even discuss the ridiculousness of hunters mobility and utility with this much healing in hand they as a class are getting ridiculously overpowered.