The Alkesh was rather weak, but I think that's because the Go'uld never knew what they wanted to due with their fighter craft. But it could be armed with more powerful naquada bombs and it was more mobile than a Hatak. Right now, we have a Stargate universe with two over-the-top ship destroyers. Drones and beam weapons. They both go for the ship's reactor to make it pop. It just seems as if a fleet of Alkesh may have been able to dodge the beam weapons where as we saw the horribly pathetic results of Hataks taking on beam weapon equipped ships.
It also doesn't excuse earth forces in Camelot for not expecting Ori ships with beam weapons. We knew that the Ori fleets were coming and the Prometheus was devastated by a beam weapon. We should have equipped F302s with our highest yield bombs and let the Odyssey make drop off courier runs of our bomber fleet. No Milky way capital ship should have been near the vicinity of a beam weapon equipped ship. It's just stupid.