Cecil 2.70 ERA, 2.34 FIP, 2.51 xFIP in a hitter's park in the AL East.
Romo = 3.72, 3.94, 3.40
Casilla = 1.70, 3.18, 3.45
Affeldt = 2.28, 2.86, 3.23
And they pitched in a giant pitcher's park in the NL West. I really don't think think there's an argument. Cecil would have just silly numbers pitching for SF while the other three would have ERAs approaching 4 in Toronto.