No, the mean erect length was 12.9cm. That's 5.078"
American Urological Association
Penile length in the flaccid and erect states: guidelines for penile augmentation. - PubMed - NCBI
The "functional length" as they called it was 6.2". That's what they mean by bone pressed.
I find it amazing that people are in denial that the average cock is a bit over 6" erect depending on the measuring technique. You just desperately need the average to be as low as possible so you can feel good about yourselves. Fact is, 8 X 6.5 is pretty common, you'll just have to live with it.