Porcello, somewhat, HRam, no. HRam had many seasons better than 2016. (HRam's 2017 season was also better than 2015.)
Porcello's ERA+
93 2012
96 2013
113 2014
87 2015
142 2016
98 2017
103 2018
His fWAR: 2.3, 3.0, 2.9, 3.0, 1.7, 5.1
1.7 is about 1.3 from his previous 3 year norm. 5.1 is 2.1 from the norm.
With HRam, 2015 was clearly the "outlier."
fWAR
after being over 7 in 2008 and 2009...
4.1
0.9 (half season)
2.9
4.9 (half season)
3.7
-1.2 (2015 in 105 gms)
3.0 (2016)
-0.5 (2017)
The point was that outlier seasons by players Ben brought in or handed over to DD caused the "turnaround" between 2015 and 2016 by more than adding Price and Kimbrel.
Others like Betts, Leon, JBJ, Wright and Pedey also did much better. Only a handful of players declined slightly from 2025 to 2016.