Hmmm…
Yes, adult traffic do have a chance to generate active players, no doubt about it.
However, from looking into the ToC for [url]http://www.world-traffic.com,[/url] I start to wonder what kind of Adult traffic this indeed is.
If internal Statistics from Casino website is not trusted in the World-Traffic ToC, and the World-Traffic Agreement allows for a 15 – 20% discrepancy in delivered traffic (where their Management Report is undisputable), I do think that more info would be required. 
Anyway.. Just my idle thoughts on that part.