Well, if you know a trusted punters username on AW then I suppose you can look at that, and take something from that. But even then I wouldn't really trust that, and would take it with a heavy pinch of salt.
Realistically, how often is somebody going to leave negative or neutral feedback, under fear of possible discretion breaking retaliation from those WGs that have bad attitudes? Not very often, I wouldn't fucking risk it, not worth the potential hassle IMO.
UKP is the best source of reviews that I have found. There is nothing that compares to it. Yeah you could question a reviewers opinion and fake reviews get posted, but it's the rare exception rather than the norm, and such things tend to get quickly revealed and dealt with anyway.
Honestly, only an idiot puts any value into AW feedback, it's pretty much meaningless to me in making a decision on which SP I want to book.