Gimme, I think there is a happy medium that can be reached between a graphic & detailed review and a three sentence review that looks more like an ad or from a white knight.
Personally, I don't find much value in a general "she's the best and my new ATF" review. For instance, there are ladies that can deepthroat with the best of them, but don't apply much suction. For me, I love a bj that feels like a hoover has been attached to me. It's comments/descriptions regarding things like that that I feel ad good info. Another example is if a guy states in the review that she does ACG, but doesn't mention that she could only do it for 30 seconds before her legs got tired and had to change position. For a guy that really enjoys ACG, he may see her but be disappointed. See what I mean?
My bottom line is I think each guy should write his reviews however he wants, unless there are guidelines from the site. And I doubt that a site would enter the murky waters of laying out rules and regulations on how a review should be written.