I would think that although William is blessed in the cock department, he is no match for his younger brother, who I believe to be hung like a Grecian donkey.
Maybe they hang different lengths soft, but I bet they are within 1/2 inch when erect. I have 3 brothers and if what my mother told about my father then we were all within 3/4 of a inch erect. The only difference is my brothers are growers, me and my father showers.