I think we have to accept that the size studies are right, give or take a fraction. There have been a lot of them, and they seem to agree more or less. And of course they also mean that 50% of guys are below average in size. However I think your personal observation would be agreed by many. We have to find another way to explain it.

The obvious is that guys with big cocks are more confident and outgoing - and more likely to be seen naked and aroused. Basically big cock = more sex.

:-)