From the review's conclusion:

Overall this volume is idiosyncratic and mixed. Instead of a state-of-the-art snapshot of Nietzsche-studies married with perspicuous introductions and overviews of central texts, many of the contributions lacked philosophical depth. Those that were of a more philosophical bent flirted with obscurity and verbosity, not infrequently straw-manning the so-called analytic [i.e., philosophical] interpretations. That being said, [Sebastian] Gardner's and [Michael] Forster's contributions are worth reading, the latter being a fine example of the required form and standard of content for a contribution to a companion. It was a shame that many of the other contributions fell short of this standard.

(For those interested in Nietzsche scholarship, I say a bit more at my Nietzsche blog.)