Joel Johnston vs. Arnold Leon — Career Comparison

On the career pitching numbers, Joel Johnston posted a stronger line than Arnold Leon. Joel Johnston posted stronger numbers in ERA (4.31 vs 4.66) and WHIP (1.296 vs 1.586). By the career numbers, Joel Johnston 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.