If you want, you can find a lot of problems with the Pittsburgh Pirates this year. You can look at certain spots in the rotation which don't feature an ace. You can look at the struggles from Aramis Ramirez since being acquired in a trade. You can even go back to certain points of the year and focus on when the bullpen was struggling, or when Gregory Polanco wasn't hitting, or any other thing that was going poorly at the time.
Every team has problems, and the Pirates are no exception. But their one problem all year has been simple: The Cardinals have been too good.