The Batbusters have teams in NJ and NY, so no. The Corona Angels have teams all over the place, too. And the Bandits have teams in seven states, so I'd say no to them.
I mean to say "are there Orgs where every team you play from that org will be a very good team?"
Frost Falcons and Kentucky Chrome (they went to Top Gun, I believe) seem/seemed to be that way. Every Beverly Bandits team we've played is very good. Mojo was but seems to be adding teams of lesser quality.