I really can't question whether or not there are better "sticks" in the MA vs the AvA or not. (I don't ever fly the MA) But going by sheer numbers I would be lead to believe that there are more in the MA.
But not to contradict you, and sticking with your theme. I think it is the greater sense of belonging that draws me to the CT. It's like going to the local dance club packed with people, wild and intense which has it's draw for some. Versus going to the local pub, like Cheers for a cheesy example, "Where everyone knows your name". Sure there is loads of hot chicks at the dance club, but you've got a better chance to really connect with one at Cheers. .
What that has to do with flight sims I don't know.
Glad to have ya though! Look forward to flying with and against ya!