The guy has an unusually huge cock, let's face it.
As for the measurement, the way you hold the ruler is cheating a little bit, I would estimate .5-.75 inches. You're not really bone pressing, but doing the same type of cheating by holding the ruler the awkward way you do. Nevertheless, you appear to have a medically accurate cock to about 8.5 inches or so, which means that very few people will be able to compete with you in the dick department. I'm sure you're going to be the biggest your partner has ever had, unless she's like an incredibly premiscuous slut or something.