Book review bottom line doesn't add up (Score 1)

I didn't know what to make of this book review. The book review points out a lot of ways in which this book is a mess (poorly copy-edited, unclear motion from one author to another, terminology used without definition, etc.). Then at the end, it says:

Usable for both learning and reference, jQuery Cookbook delivers a tasty buffet of programming essentials, best practices, illustrative examples, optimization tips, and other information of value to JavaScript developers who wish to spice up their Web creations with jQuery.

What gives? This seems like a conclusion ripped from an entirely different review. If it's that this book is really the only choice right now, then you could say that. but this sentence here looks like it comes at the end of a rave review.