The leaderboard led me to look into the career of Charlie "Buck" Geggus, who has the highest WAR of any pitcher on the list. I never heard of him. Have you?
He was a real guy, and here was his real life stat line:
Compare that to his stat line in this simulation:
Geggus is second in career wins after Walter Johnson and 12th in career ERA, with the best ERA for anyone with a career as long as his.
He was clearly the best 19th Century pitcher in this sim. I wonder whether it would have been called the "Buck Geggus Award"?