Talk:Jeep Liberty/Print version

I am curious about the opinions given for two vendors in the Ring and Pinion Gears section. One being considered "...the worst..." by off-roaders and another as "...the best...". I am not knowledgeable about this particular topic (perhaps the parts are really the best and the worst), but I would like to know the basis of these postings. Was it from a BS session one night, an ad-hoc survey taken somewhere--sometime, or an actual scientific survey by an unbiased entity?

Without that information, I have to consider the posting to fall outside the envelope for Wikibooks.