You're absolutely correct about the mediocre and bad years, when a club exists for so long, those are practically impossible to avoid. The 19-aughts and 70s were outstanding, each decade had more achievement than the histories of many clubs today. From 1901 to 1992, the Bucs were winners roughly 66% of that span, an impressive record. The club also has the most batting champs in MLB history, and more primary hall of famers than teams like the Red Sox. Overall, even with the difficult times like the 1950s and the current losing streak, this is a storied franchise with a winning tradition. In the context of other MLB teams, it's accurate to place the Bucs about in the top third in overall franchise achievement. Even despite the consective years of losing, the Pirates still have a winning record overall (9940-9803, .503 as of today). The team has shown some competitiveness in the last couple of years, and if they can keep it together down the stretch, they could finish at least .500.