Paul Penson vs. Unknown Perry — Career Comparison

On the career pitching numbers, Unknown Perry posted a stronger line than Paul Penson. Unknown Perry posted stronger numbers in ERA (1 vs 4.5) and WHIP (1.222 vs 1.750). By the career numbers, Unknown Perry 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.