From 2009-2020 there were 150 pitchers with 800+ IP. That's 5 pitchers per team x 30 teams (150). This may be a flawed method of determining a pitcher's value in terms of context and how other starters were doing during his era. There are many pitchers in that era that did not reach 800 IP. My guess is most were worse than these 150, but I'm sure some were better, since their career did not overlap fully with 2009-2020, of their career started after 2009, and they have not pitched 80 innings, yet.
If you go by the top 30 are #1's, 31-60 is #2's, 61-90 is #3's..., here's how Porcello ranks among his peers in these important categories:
19th fWAR (#1 starter)
81st xFIP- (#3 starter)
85th SIERA (#3 starter)
85th K-BB% (#3)
89th WHIP (#3)
95th ERA- (#4)
140th in BAbip (.308) could be an indicator he had poor fielding behind him and/or pitched in pitcher's parks more often than others. This is backed up by his low LD% (73rd ranked) and hard hit% (57th ranked).