This episode exists just to plug the supermassive plot hole from Rising (ep. No. 1).
However, it only adds to the misery. It always takes more energy to grow a complex system than to destroy it. It takes many, hundreds/thousands of tons of oil and coal to build a tank/jet and only about 1 liter of oil/energy to destroy it. So, 3 ZPM's wouldn't cut it. You'd need less than 3 ZPM's worth of energy in weapons to destroy the Wraith fleet. And the Ancients surely had dozens. Furthermore, if the Wraith could grow ships, so could the Ancients.
So, again, total nonsense from the writers. How come there aren't any surveillance sensors in a Wraith facility of this importance?
However, it only adds to the misery. It always takes more energy to grow a complex system than to destroy it. It takes many, hundreds/thousands of tons of oil and coal to build a tank/jet and only about 1 liter of oil/energy to destroy it. So, 3 ZPM's wouldn't cut it. You'd need less than 3 ZPM's worth of energy in weapons to destroy the Wraith fleet. And the Ancients surely had dozens. Furthermore, if the Wraith could grow ships, so could the Ancients.
So, again, total nonsense from the writers. How come there aren't any surveillance sensors in a Wraith facility of this importance?