According to the Journal, the reasons for the great success of The Historian vs. the more modest success of The Traveler were, as follows:
- Kostova's excellence at public speaking (Twelve Hawks, on the other hand, refused to be interviewed or tour)
- Her January prepublication tour
- Her publication tour
- Her ability to connect with booksellers, especially independents
- The fact that a tale about vampires is generally more appealing than a science fiction novel.