Could just be a preference -- maybe they sampled several books on the same subject and went a different route.
I recently bought up several translations of The Arabian Nights on Amazon and spent time comparing them all. I didn't ask for a refund on the free books, but I did leave a 2-star review on one version.
I hope the "author" doesn't feel bad about my review, but it's a PD title and I had issues with the formatting and didn't like the translation.
