If this is the best they can do, we're in good shape. By "they" I mean what Schliermacher called Christianity's "cultured despisers." He didn't handle them particularly well, but we can. Atheistic controversialists haven't come up with anything new or interesting lately. As for rewriting history, just see what's been done to The DaVinci Code. The present bit of pseudo-scholarly marketing will fare no better as anti-theology than the book has.
For a few withering reviews, go here and here. (HT to Pontifications.) Be forearmed.
My main worry is not about the Western enemies of the Church, but about what Christians do to themselves by their divisions and their contracepting in the face of militant Islam.