Unknown Brewster vs. Mutt Williams — Career Comparison

On the career pitching numbers, Unknown Brewster posted a stronger line than Mutt Williams. Unknown Brewster posted stronger numbers in ERA (4.5 vs 4.91) and WHIP (1.250 vs 1.364). By the career numbers, Unknown Brewster 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.