your right more matches would be better,but the tie brakers can seem unfair to most,case in point
Nathanial in one tourny was in a round robin and there was a 3 way tie for 1st, he got third and the boy that got 1st he beat,but like you said the points gave it to the other kid,and thats were it may seem unfair to alot of people, so to avoid this in a 5 man situation they use a 8-man braket,no ties this way.