Jonathan Aro vs. Tom Sullivan — Career Comparison

On the career pitching numbers, Tom Sullivan posted a stronger line than Jonathan Aro. Tom Sullivan posted stronger numbers in ERA (4.04 vs 6.55) and WHIP (1.534 vs 1.909). By the career numbers, Tom Sullivan had the better of this comparison — though ERA and WHIP alone don't account for era, park factors, or the defenses each pitcher worked behind.