What I've noticed is that the NT explanations are a hell of a lot more complex. Even more than the NFs. Especially near the beginning of the chapter. I think he has a clear emphasis on NTs, because he knows what he's talking about there (he is one).
... and that is why I enjoyed it so much... It was the first MBTI-book I read, which meant that at that time I was only really interested in learning more about my own type. In this respect, having the same type as the author was great