back at Kublacon, I fought against a Bin'Tak (under 1e rules) in a 5 point raid. It was not an easy fight, and took the entire battle but I killed it eventually. I was able to use terrain to help in that fight. And that wasn't a swarm fleet, either - no patrol choices. 3 raid and 4 skirmish if memory serves.
but generally I think its a Bad Idea in any wargame, to put 80% of your force in a single unit. So you might take that war-ship in a larger raid game, say, 8 points, but I advise against it in a 5 point fight.
The only ships that might stand a chance are those with high stealth, good self-repair, or adaptive armor, or better yet, a combination of hte above!
Chern