theres no doubt that the one in pred 2 was the stronger, its supposed to have an electric charge on its blade make cutting through large object i.e ten cow bodys easier to cut through
i still think that had the preds in avp had them they could have cut the queen down easier but word on the pred streets is this baby it take alot of concentration to capture the disc on its way back to the pred and could cut through them
the ones in avp were more for the younger ones easier to use but less effective