I'm talking about what I see on the net. I don't know about 'studies' - how accurate are they, anyway? Do academics really bother with these issues? I think cock lovers have a better idea, as a group, about respective sizes. They just see so many more. That's why I raised the question on this forum.
Except that perception is incredibly flawed and personal experience is far too easily tainted by coincidence. (interesting though your conclusion that black guys and white guys have the same average, is correct, but I suspect you're an exception, or you may have set out beleiveing that they are the same so your perception has filtered things in order to support that conclusion)
People are simply terrible at judging things like size, and worse, memory is easily tainted or biased in a certain direction. I.e. if you sleep with 10 black men and you believe that black men are bigger, you'll remember the guy with the 7" dick and the guy with the 8" dick, and forget about the 2 with 4" dicks and the others who were all completely normal.
Further, area will inevitably play some part - if you happen to sleep with 10 black men who are all from the same area and who are, as a consequence, all distantly related, and their distant relation means that on average they have larger cocks than the actual average, then obviously you'll come to an erroneous conclusion.
So, unless you've slept with every black man in America, you used a ruler to measure them several times over the course of a week and kept those measurements down in a diary, you really aren't in any position to relate racial average.
In other words - I'll take a study by Professor Robert Kinsey (who was a pretty eccentric chap, granted, but did things fairly scientifically), over personal experience.