When I research a provider the first thing I do is scan her reviews once I have a general understanding of her average scores I look at so some specific reviews. If I see a ranking of X - X (whatever, 9 - 9 or 8 a 10, etc.) I look at that particular reviewer's OTHER reviews. If he's given a great score, say a 9 - 10, to this provider --- but he's given ALL his reviewed gals a 9 - 10, then I have an idea of his "scale".

While you are looking at the reviewer's other reviews, can't you just scan the list looking for ladies you have seen?  I suppose it would save a few seconds having the ladies that you both have in common highlighted in some way, but it is not that difficult now to pick them out.