The fact that this book has a one-star review from a pretentious wanker is beyond belief. Susan Buck-Morss is an expert in her field. Her writings on Walter Benjamin are superb. That is all you need to know.
The deeper flaws in this synoptic summary are suggested by the profusion of factual errors: even names are misspelled, confirming the author's overreliance on the assertions of secondary literature without more than a superficial understanding of the discursive context in which Benjamin's unfinished magnum opus was prepared. Thus the flood of footnotes, over 100 pages of annotation documenting a disappointing hesitance to form opinions based upon original research. Fortunately, Benjamin's Paris "Arcades Project" will be appearing imminently in English translation; unfortunately all the serious scholarship or reflections on this work only exists in German or French.