If I were as silly as Andrew Sullivan, I would do just what he does whenever the target of his criticisms “fails” to respond: I would take his “failure” to respond to my review of his book as definitive proof that I have completely overthrown his entire argument.  It would be obvious to me that I have already anticipated his every reply and decisively routed him, so much so that he is embarrassed even to talk about it.  I would say things like, “Why is there such a deafening silence from Andrew Sullivan?  Clearly, he knows that I have his number!  Ha ha!”  But no one else could ever be as silly as Andrew Sullivan.