Here is my take on it - most reviews would be more helpful if you knew more about the person writing them. For example, I have sex
I find the person reviewing is the wild card here. For example, I am out, gay, and see nude young guys often SO a massuer will need to do more than just get naked. Make sense?
If the review is written by a really hot dude, a massuer or escort may go further than normal. RM also needs to keep as many guys as possible paying to be on their site - this only really high mark reviews.
In general, I find 3rd party reviews much more helpful!