Porcello had a 4.30 ERA with Detroit, including a 4.08 ERS his last 3 years there and 3.43 before comin to the Sox.
He went 4.92 under Ben, then 3.15 in his Cy Young year, the year after Ben left.
Timing.
Had Porcello had his 2016 season in 2015, Ben would have stayed another year or more.
Wade Miley had very good road numbers with AZ, before we got him. Hisd 4.46 ERA was way higher than his 3.79 ERA in 4 seasons with AZ. He was not a 4.4 pitcher, and still isn't.
He's been at 3.63 the last 4 years combined.
Timing.
Buch had some excellent seasons with the Sox, including 2013 with Ben as GM. His career ERA was 3.98, but he went 5.34 in 2014 and only pitched half a season in 2015.
Timing