It depends what exam boards you're on as well I think.
I took both, I did better in History by a little bit, but there are a lot of dates and figures and facts to remember obviously, and not just remember but apply and consider etcetera.
If you're good at Eng Lit tis pretty easy to do well in A level history, especially if you find it interesting, because presumably you are already good at essay writing and applying knowledge and analysing sources and things already.
I found I had more out of school work for History than Eng Lit but again that completely depends on the teacher and exam board!