"Definitive account"

Something else that's annoying me from that article in this morning's Independent is Cornwell's description of Plan of Attack as the "definitive account" of "the administration's road to war in Iraq". Well, if Woodward's book is the "definitive account" why doesn't he have any references to Bush's claims that God told him to invade Afghanistan and Iraq? Seems to me that would be a pretty significant detail to leave out of the "definitive account".