The View From the Wing blog posted some pretty strong criticism of their methodology. It's worth reading the whole post, but a couple of important points:
- They searched airline websites only. So even though US Airways and United have access to the same award space, United offers online booking of many partners while US Airways does not. Thus United ranks much higher — even though miles in each airline’s programs can access the exact same saver award seats.
- They’re searching different routes for each airline but over the same dates, which ignores the effects of high and low seasons.
http://boardingarea.com/blogs/viewfr...d-availability