Quora Launches Reviews

It's interesting that the article never compares explicit reviews with the implicit reviews that Quora already generates. Consensus (upvotes/point scores) can review things the same way that a starring system can.

I can scroll through comparative star values of different movies, or I can compare the upvote scores for different movies that are answers to the question "What are the best 'twist' movies?" (http://www.quora.com/Movie-Story-and-Plot-Themes/What-are-th...). Both are relative scales, but I'd be interested see what differences the two scales would produce in terms of ordering and favoritism.