Don't get me wrong--I think each daimon was about 10 times the strength of each human, they are certainly not pushovers. The question really boils down to, how quickly can they recruit more?
If they have units like the daimons on BT do, the CS value is a *gross* understatement of their actual effectiveness.
I would also suspect that destroying the Zuma might not be possible. They were obviously put there for a reason by Tom. I doubt that reason was to be a punching bag.