If you are doing a comparison of opportunity and consequence, then basing conclusions on that, you have to know if opportunity was equitable before making a comparison of growth.
In short, 2 lines on a graph . Do they each have 0 as the base?
I worked in business doing the math compiling data and making reports comparing pharmaceutical products long ago. Higher ups wanted me to game numbers that were bad. You hide the problem by not stating it and hope nobody spots it.