The truth is bad players will say hunters are rubbish. If you actually know how to use one, you're fine. They are weak in pve, up to titans and warlocks. They are adaptive.
EDIT:LET ME MAKE IT CLEAR. IT'S PVE, NOT PVP.
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Hunters are probably the hardest of the three for PvE mainly because their supers kinda are pretty useless (unless you use nighthawk) and they can't take as much damage as Titans or recover health as quick as warlocks.