Jonathan Aro vs. Unknown Smith — Career Comparison

On the career pitching numbers, Unknown Smith posted a stronger line than Jonathan Aro. Unknown Smith posted stronger numbers in ERA (0 vs 6.55) and WHIP (1.500 vs 1.909). By the career numbers, Unknown Smith 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.