yes, there is usually a size requirement at certain positions in fball, hoops & soccer, which in itself doesn't make them qualified for div 1 college play.
soccer needs for quick/fast players who can run all day, which usually results in smaller low center of gravity types that can turn on a dime, fball you gotta have more meat to survive, hoops, gotta have some height first.
these are all minimum general requirements w/exceptions of course.
i really don't get your point