I truly believe that Asian men are much less likely to show off their big cocks compared to white or Black men due to a variety of reasons, including cultural. But one reason I think is that Asian men who are well-hung may not always be aware how well-hung they really are. As an example, I had a straight friend who I found out was pretty big- about 7.5 inches- but he was convinced for the longest time that he was only average because he was comparing himself to porn stars, who we all know use angles and all sorts of camera trickery to look even bigger than the really are. As such, he was a pretty shy, awkward guy who rarely dated because he was so anxious around girls. He found out he was big once he dated a white girl who told him he was bigger than any of her exes!