I watched the first 68 minutes of the debate and thought it was pretty good if not totally predictable. Both participants in the debate are good if not great debators. They have both elequontly demonstrator a mastery of the english language but I can not say for sure either fully answered or for that matter, stayed on track of "Is Christianity the problem?"
I suspect this book is not a whole lot different from Stobels "The case for Christ / Christianity" series. It may well be presented differently and may well be quoting different sources.