Yes the top teams tend to have experience across the park.Not sure about young but saw the numbers earlier in the year for experience, we had the least with 1100 odd games, tigpies were next from memory. Top teams were close to 3000 games.
Also the successful teams tend to use the fewest players during a season, with obvious advantage to teamwork. So far I think we have used 30 different players this year, few if any clubs would have used more.