When it comes to WAR, the difference in half a win or three-quarters of a win are pretty marginal. The error bars on the math mean we can’t definitively say a 4.3 fWAR player is really all that much worse than a 4.7 fWAR player, but a 5.5 fWAR player is better than both. With that understood, we can’t confidently say Roger Clemens was the third-best pitcher on the 2001 Yankees, but the Cy Young winner — who captured 87 percent of first place votes — was at best the No. 2 pitcher on his own staff by fWAR.