As with all product review, taking one and accepting it as being "right" is at best a dubious way of using the information. Reading five or six is a better idea because then you get other perspectives. I do this all the time for movies - if I bother to read the reviews at all. The Rotten Tomatoes site is excellent because it gives so many different points of view that you get a better overall idea about it.
Of course, we are all a little biased when it comes to our TBAs - otherwise we wouldn't have them.
Siggy