In "Better Off Dead", you don't cheer for the rich blond antagonist, you cheer for John Cusack's character. Sure, he has some issues (obsession with his girlfriend, for example) but he's likeable, and you want him to succeed. And in the end, he winds up with a cute French girlfriend who loves baseball and classic cars. Not too shabby.
The Yankees and the Marlins are the equivalent of the aforementioned antagonist (with the apt name of Stalin). They're jerks, they're rich, all the popular girls love them, they get whatever they want, and they're mean. You don't want them to win, you want the unlucky, slightly scruffy teams to win. But nooooooo - baseball is all about fat overpaid guys in weird polyester pants. It's all about who has the most money. Baseball, my friends, sucks. It's boring, it lets fan interference affect play, it has stupid fans interfering just so they can get a souvenir to sell on eBay, it's boring, it's slow, it's about statistics and numbers, it's boring...and now we have proof positive that baseball has no soul. Yankees and Marlins, who cares?