Last time I looked, Amazon is a "Brick & Mortar" book store as well as an ebook store, assuming that by "Brick and Mortar" we mean a seller of pbooks rather than a physical place you walk into to buy books.
Perhaps we should recognize three categories of book stores;
- The ones you walk into to buy physical books
- The ones you can order physical books from
- The ones you can order electronic books from
Amazon overlaps the latter two whereas, AFAIK, Fictionwise is only represented by the third. Barnes and Noble are represented by the first two. For Amazons figures to be meaningful, I think the statistics must be broken into these three separate categories rather than compared to the ambiguous term "Brick and Mortar stores".