The economic state of Germany after WW I, was understandably devastating and made worse by the repressive and vindictive policies of the Treaty of Versailles. This economic catastrophe gave rise to Hitler, who from the early to mid 30's did bring a turn around in the economic conditions of Germany.
All of this is, of course, overshadowed by the horrible calamities of WWII. No history of Germany would be complete w/o telling of both the rise to power, and then of the unforgiveable horrors which followed.
Now fast forward to 1968-1973. Richard Nixon as President accomplishes some significant policies that are today overlooked (Opening the door to China, is one example). Nixon accomplished a lot as President, however, when was the last time we read a report, or article, about Nixon w/o there being the references to the "crimes" of Watergate? I am not comparing Nixon to Hitler, but am drawing a parallel to the way they are viewed by historians. It seems that the events of their downfalls, takes the lead (understandably so), and that anything said, except for complete condemnation, falls on deaf ears.
In regards to this specific text book, it would seem to be telling only one side of the story, a trait much more common to liberals it would seem to me.
However, this book praises Hitler's economic accomplishments, while ignoring the Holocaust and the fact that Hitler caused the death of tens of millions and turmoil for the entire planet.