Considering they mentioned the Bible within the first 10 minutes, as well as all of the "you're a sinner, you'd better watch out!" BS, I got the distinct impression that this had nothing to do with debate.
Ray and Kirk were simply "witnessing" to the audience, nothing more. They just wanted cameras and a few million viewers to watch them preach. If you notice, they said almost exactly the same things they say in their clips of regular conversion attempts. This was a publicity stunt, nothing more.
Make sure you watch the full, unedited version online. The edited version they played on TV, so I hear, was biased to the extreme against the Atheists.
Speaking of which, the moderator toward the end was being an idiot. The Atheists were asked about transitional forms, and responded that all species are transitional. The moderator kept interrupting the explanation to the point that the question was left almost unanswered. If he had just shut the hell up and let them speak, he might have cleared up one of the biggest misconceptions about evolution held by the American public.
I really wish Dawkins had been there, though. The RRS is decent, and I like them, but the fact is they aren't as verbally eloquent as Dawkins. He's just better equipped for public debate, I think.
My favorite part was in the Q&A session, when the RRS provided a laundry list of Atheist societies and statistics showing they have the lowest amounts of violence, murders, infant mortality, etc, and then showed the uber-religious US as being basically the worst, statistically. So much for "morality requires a deity."
Every time a fundy breaks the laws of thermodynamics, Schroedinger probably kills his cat.