These comments are based on Adam Tooze's review of the Davies book [Europe at War] in the TLS of 11-16-2007. Tooze has a low opinion of both the book and of Davies' scholarship. This is why.
Davies has a right wing revisionist view of the history of WW2 and uses his book as the basis for an attack on the USSR wherein he argues for the moral equivalency of the USSR and Nazi Germany. "The war in Europe was dominated by two evil monsters, not by one. Each of the monsters consumed the best people in its territory before embarking on a fight to the death for supremacy."