RJ did a pretty good job when answering questions. I rarely saw mistakes. I think I could do a pretty good job if people asked me about the series, as could many people on the site. I think it would require an intimate understanding of the series to write it, and I think Brandon hasn't read it enough and isn't familiar enough with certain aspects of the story. Forgetting that Perrin and Masema have met is a major error, not likely to escape proof readers, but enough to display his knowledge of the series.