I'll reply to this since it seems to be causing confusion.
The analogy works as what you have shown
still isn't what I stated. Look closely and you can see that it is a correlation in Muslim majority countries between GPI and several variables which are: "Overall Positive Peace Index", "Well functioning Government", "Good relations with neighbours" and "Low levels of corruption". It's basically testing how well these aspects correlate with GPI in Muslim majority countries -
not how peaceful Muslim majority countries are.
Please note that when the authors tested religion against peace, they correlated "Level of religious belief" versus GPI.
As I asked for Muslim majority nations and their relationships with peace, this would be shown as something like "Level of Islamic belief" versus GPI - something that
is not (as far as I can see) present in the study.