Not necessarily. It really depends on the leader's leading ability. An adult may be smarter and have more experience, but a teenager can be just as smart or have as much experience as the adult too. Afterall, this is just a game. It's not rocket science on how to manage forums or dictate a few things game related. As stated before, it is always good when the amount of teenagers/adults in the clan are balanced. That way, you can have a lot of different point of views from a younger age era and an older one. And plus, us teenagers keep the adults feel young =)