I'm sorry, how does history require fewer hours than chess? Are you a historian or chess player? What does history 'performance' even mean?!
I don't know much about chess, but fields like software and math are analogously low on information volume compared to history, making a much lower baseline on hours for good talent. I'd say musical performance, likewise.
Math has low information volume, but it is slower information. A good historical treatment of a topic may be 2000 pages, and a good math treatment of a topic may be 100pages, but both requiring the same amount of time to study and comprehend.