The Reward Risk Ratio calculation has a bug, or seems at least very weird: It turns negative, when the average loss is bigger than the average winner.
So there's a gap between 0 and 1 and it's non monotonic, e.g., from better to worse: 3 -> 2 -> 1.5 -> 1.0 -> -1.0 -> -0.8 -> -0.2 -> 0.
If you want to emphasize the lower values, you could take the log of the ratio.