All 4 of those franchises were created at roughly the same time. They're icons of baseball history. The Cubs history has been just that...little investment in the club despite sellouts. People go to Cubs games not for the Cubs but the experience. It's baseball nostalgia. It draws fans in from all over the country any time they visit Chicago...not because the Cubs have been a draw, but because Wrigleyville and Wrigley Field are a draw. There isn't a rabid fan base out at Cubs games...it's the "loveable losers" playing in the "friendly confines." That says it all.
I guess Boston before this past decade was the same thing too then. People visit Boston and check out Fenway the same way. Cubs have gotten unlucky too just like other that have been or in a large drought for a title. Theo Epstein will win the Cubs a title this decade. Book it.
Baseball's way too difficult to gauge out ahead of time to "book" anything 10 years out. Boston's fanbase is entirely different from Chicago's. Not sure if you've been to a game there, but I liken it to college football fans in the South. It's far more intense than the friendly confines.
Boston fans are crazy. There's no comparison really. Even the women in Boston are crazy ass fans. They grip over everything.
It's definitely more intense. I'll give you that. Boston's a Red Sox town first and foremost even with all of their other great teams. Chicago's a Bears town first. After that, it really just depends. I might be going to a Cubs/Red Sox game this year (first time Boston's coming to Wrigley since 05) so it might get pretty wild here with both Sox fans and Cubs fans. I can assure we have equally as crazy female fans. Especially the younger ones. Before I moved here, females and sports didn't really cross my mind too much. Every sport here, there are a crazy amount of female fans. Boston and Chicago are really alike in terms of sports except for the fact that Boston has had more success (especially recently).
