Yes, baseball they play too often to hype up an individual game.I would say that the baseball rivalries lose some luster for many simply because they are played so darn often in a given season. Same with hoops and to a far lesser extent pro football.
It's one reason I love the college football rivalries. The vast majority are played once a year. In a RARE occasion you get them twice, but again it's rare. In my opinion, the victory means more because of it.
With football, you have that 1 weekend to look for. And for a great rilvary, you almost need to be in the same division/conference, that way the teams play every year and play for that same playoff spot/championship.
Hard to keep up a rilvary if you don't play every year.