A girls service can be very subjective too, and also it can come down to the connection you have with the girl. The services one customer gets, won’t be the same as every customer receives. Some girls will have bad days, or the customer could be completely rude, demanding, arrogant, rough, all of which might get the girl offside.
I have definitely used some reviews as guides as to who to try and who to avoid, but even if I see a glowing review of a girl, I don’t enter the session with any specific ideas on what might be on offer, just have to let the session develop. If we click, then it’s a bonus.