It's really a matter of warped perception. The average penis size (regardless of race) is considered to be 6" (15cm), but many many years of stereotyping (mostly by whites - dating way back to the days of slavery) have created the myth of the "big black monster". But like any other monster, it's pure fairytale (and can scare small children
). I'm a white guy who was cheated by mother nature but I'd be perfectly happy with 6", but because men of colour are expected to be "tripods", a brother packing the average (or even above average) is considered small. I'm sure there are many men of colour who have been made to feel small when they aren't. There are probably a lot of brothers who are unnecessarily depressed about their size when they really have something they can be quite proud of. The guys in the videos don't look small to me.
P.S. Thanks blkbro510 for finding/uploading/posting all the videos - where on earth do you find the time? Do you need an assistant?