This is the way to go in my opinion. I think it’s the easiest, most straight forward, and not confusing to the reviewer. You shouldn’t be using box plots to des

This is the way to go in my opinion. I think it’s the easiest, most straight forward, and not confusing to the reviewer. You shouldn’t be using box plots to describe the shape of data to begin with, but having a ghost/after image/super imposition can probably only help in cases where you need to communicate that the shape is different, even if the statistical nature is the same.