Reading further, including those charts, is what made me understand that my initial reading of the first chart was wrong after a bout of confusion. IMHO, it's

Reading further, including those charts, is what made me understand that my initial reading of the first chart was wrong after a bout of confusion. IMHO, it's still the wrong choice. If one feels like their audience doesn't understand "Lower=Better", then I feel like plotting the inverse or the difference (I'm not familiar with this score) is the solution. Breaking the x-axis convention is inviting confusion, especially with the "Lower=Better" disclaimer (again imho).