That site is B.S., apparently done by someone with some agenda like pushing a product, or penis humiliation fetish. For some real world data from actual women, and an example of how to control for inaccuracies when asking for measurements, see the thread What is the right size as judged by the experts
When dealing with actual phallic objects, women turn out to have a size preference of about 7 x 5.5, which coincides with many posts by female contributors at this site and other sites such as LPSG with more women members, though there are a few size queens out there as well. There is way too much urban legend about large penis sizes, fueled by general inaccuracy and porn fantasies.
Wow nice thread, I must have missed that one.