That chart is pretty accurate and, having seen MANY cocks (more than I should probably have in my lifetime lol) I can tell you that 5-6 inches is the norm.
Back to the OP: Sissy is in the mind not the penis So if you are one then you're an average-size cock one
Size doesn't matter if you don't know how to work it. Seeing as you post stupid questions like that, I'm guessing that you don't know how to please a woman. Too bad, sissy.