Unknown Bookman vs. Unknown Hamilton — Career Comparison

On the career pitching numbers, Unknown Hamilton posted a stronger line than Unknown Bookman. Unknown Hamilton posted stronger numbers in ERA (8.1 vs 27) and WHIP (2.400 vs 4.500). By the career numbers, Unknown Hamilton 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.