Jonathan Aro vs. John McMillon — Career Comparison

On the career pitching numbers, John McMillon posted a stronger line than Jonathan Aro. John McMillon posted stronger numbers in ERA (1.69 vs 6.55) and WHIP (0.813 vs 1.909). By the career numbers, John McMillon 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.