I agree, you make a good point.
you go into the reservation and you can just feel the town pride and winning tradition. Being an ex high school football player, it gives you chills. And the fact that the stands are full every game.
On the other hand, the Butch is packed two or three games a year. Like you said, nobody owns it. There isn't that school/town pride because several schools play there.
I can't explain what atmosphere means, all I know is that I walk into the reservation (along with many others), and can just feel it. You walk into the butch, and it's just a really nice venue. Only my opinion though.