When I book a WG on AW I usually have a look at the feedback and note if some of the guys have familiar names to see if the WG has been given feedback by what I consider to be "trusted" punters.
I then do a search on here to see any reviews.
I think that this is a good way to use AW feedback.
Another thing you can do is to look at punters who have left a given girl feedback, and then check their feedback.
So - if Cumbucket has left Booby Tuesday feedback, check Cumbucket's feedback to see if he has seen any girls that you have seen yourself and know to be genuine.
Thus, if Cumbucket has seen Sexbomb, Blowy Chloe and Sucking Suzi, all of whom you have seen yourself, Booby Tuesday, the girl you're checking out, is probably a good bet.
Check her reviews on here.
I'm not saying this is totally foolproof, but it works pretty well for me.