They start out at VR mk 12... so your not gonna hit Epic at Mk 15... hell you'd be lucky if they hit UR at Mk 15.
But say that you do... is the performance comparable to other Epic Mk 15 weapons... Lock Box & Rep ones?
At T6 Rep... I have both sets of energy weapons... but still not enough to outfit a ship in 1 energy type. If I include the unique mission reward weapons that would help do it for most part... but is it worth it? Obvisouly I wont be upgrading the ship gear from the mission rewards... just the energy weapons, maybe consoles. I doubt the torp would be a good upgrade, unless your doing a torp ship.