The numbers by themselves, although a guideline to start, are not so important, unless everyone has the exact standards. The statements of what the reviewer did and how he made the provider cum are completely useless.  Facts about the service, what was available, attitude, and how the provider made the clients visit enjoyable and pleasant are very valuable.
Again, just my opinions on this, others may have different ones.  They may even disagree, no one is incorrect, just a matterof taste.