Worldview books have a tendency to use a lot of philosophical terms and ideas, making them hard to recommend to the average person. Mulvihill's book, on the other hand, is written for the average layman and is rigorously biblical. Rather than writing critically of other worldviews, he instead focuses almost the entirety of the book on how to build a biblical worldview in our children. He does this by consistently and comprehensively applying the Word of God to all of life.
What this means, though, is that for those already familiar with these ideas, there will be little new in the book. So the book is fairly basic, but many do need that. All in all this is very good at what it is meant to do--namely provide parents and educators the framework to take every thought captive to Christ and to live in a manner consistent with the mind of Christ.