I really don't see what is so great about those stats. I mean, with the website that I run (which is ONE paysite)...I "generally" receive approximately 25 sales per day but there are days when I receive nearly 40 signups per day. Not trying to brag because there are websites out there that are doing much better than mine. Then again, there are many that are not. No big thing to me...as long as I am making my money and generating good traffic.
Adult webmasters generate different results with their websites. Some better than others, some worse than others and it's no big thing really. That's the way the world of business works.