The book is an easy if, in terms of management literature, a somewhat surprising read. It does not pontificate on ways to make the proverbial better mousetrap, instead it focuses on doing the basics right - i.e. delivering the broad category benefits to consumers sufficiently well and time after time.
As with every such book, there are examples aplenty and many are intuitively appealing. Irrespective of the differentiation strategy dreamt up in the 'strategizing circles' in the boardrooms of companies, most consumers simply do not care about this or that differentiating feature and simply want a product that fills their needs reliably, at an affordable price - something simply performing the category promise. It delivers a similar message to
The One Minute Manager - Raving Fans!: Revolutionary Approach to Customer Service in a package more suited to people, who do not get taken in by the one minute manager approach to writing.
Furthermore brand building as such is not dismissed but more or less relegated to the 'cherry on the top' corner, rather than hailed as the main and (practically only) game in town. One does get the impression that the book's examples are primarily chosen in a way to reinforce the message, rather than to test the theory (even in a sandbagged kind of way), costing it the fifth star in my opinion.
If you want an easy commute read, and some food for thought of how to improve your company performance with little risk, the book is certainly a good place to start. But as the authors warn, little risk does not mean little effort or automatic glory after - providing adequate service is not the same heady experience (in the eyes of many marketeers and top management) as dreaming up the next best thing / unique selling proposition.