For PvP they are. Defender is terrible in PvP and the bubble is basically just glorified area denial, but it isn't even that, because it's countered by every other super except Radiance. The only time it's good is occasionally on a Control point, or in Rumble against a bunch of noobs that don't know any better than to try and walk inside the bubble. Strikers have a terrible super that will rarely get more than one kill and barely produce any orbs for the team. Shoulder Charge is a gimmick that doesn't really hold up against higher skill players who can see it coming from a mile away. Grenades and melee on both subclasses are pretty mediocre and are nowhere near as good as Warlock's.