Out of reasons disclosed from me, these remarkable findings were not sufficiently covered by the international straight press. 
Odd that this should come up. A few years ago there was posted on another gay message board a happy little news story about a similar survey. A major German condom manufacturer had found the sales of their various sizes of condoms to be...curious. So they commissioned a study to determine the range of penis sizes. As it happened, they found that an inordinate number of men buy condoms that are not at all properly sized for effective use.
Well anyway, the average size mentioned in the news article was met with great skepticism by the gay men reading the board. While this figure was not unreasonable, they found it was by no means common enough in "the wild" to call it an average.
In a similar vein, a female friend of mine from university (oh, so very long ago) expressed an interest in the small pornography collection my roommate and I had accumulated. She was shocked. "Wherever do you guys find such large...?" In truth, neither of us knew what to say. The gentlemen in the images were fairly ordinary.
It is perhaps best for the str8 boys' dignity if this finding should remain our little secret.