Since I have been boycotting Wal-Mart for over a decade now I am unfamiliar with their website, although the author does a wonderful unbiased and informative write up, it does not seem they are falsifying feedback in any way and are taking a higher approach to regulating their image.
Martin Whitman, manager of the Third Avenue Value Fund, notes that Ramezani's findings are biased toward large-cap growth stocks like Wal-Mart, which began the decade cheap and ended it expensive.