I know its more then 5 matches because when they are not wrestling at a school duel or tournament they are allowed to wrestle at kids club events.
To me the big advantage is the amount of mat time the younger wrestlers get.
Say when that Tulsa Union team was here wrestling, younger kids that fall into the 15U group are allowed to wrestle at kids tournaments. Heck the HS coaches are allowed to coach them as well. This creates larger turnouts at the tournaments, which creates more revenue for kids clubs as well. Somekids club tournaments don't have the 14u division due to attendance levels.
They are also allowed in the rooms to practice with kids club coaches while still wrestling for the HS.
This allows the more workout time and a chance to be mentors to younger kids.
The 5 match rule, the 500 mile rule, and the seperation from kids club are holding them back compared to other states.