Women seem to believe in general that loud or outgoing men are confident, when in reality self image and composure has nothing to do with "game" or how socially adept someone is.
It can be the case that someone has a lot of self confidence and simply doesn't want many friends or has a quiet demeanor or introverted personality. Confidence has nothing to do with outgoingness.
Most Helpful Guy
This is a really good question and I await answers (or more like, attempts to justify) from girls :P1