Yeah it's tempting to say that but there is so much recency bias there, and we all know how volatile ERA is
If you look at his entire career, there isn't a huge difference. 1015.1 innings.
3.88
3.84
3.83
3.67
3.66
That ^ is the range on his ERA, FIP, xFIP, SIERA, xERA.
Yes, none of those are "Ace" numbers especially considering where has pitches, San Diego and the AL Central. I do think Toronto must think they can help him be a bit better.