Only 50% of the last 22 reports positive?
Lies, dammed lies and statistics.
You would need to go a lot further back, and get into the details of the punts before drawing any conclusions.
If you use this site and stick to well reviewed WG then you are more likely to have a good punt then a bad one IMO. Thanks to UKP

These stats tell us more about the punters.
By this I mean most members will post a Negative, especially when looking for someone new or TOFTT.
If every one reviewed repeat Green uns for already well reviewed girls then this will probably outweigh the negs. This site helps so many leeches that don’t review.
We are only seeing the tip of the iceberg.
I haven’t really been tempted to punt in Birmingham for ages.
Got one or two in my hotlist but CBA.
Also because of the rising prices I tend to play safe and stick to my regulars from Manchester, who I occasionally see when they tour Birmingham areas.