Wow that figure is bad. The table compares only the situation where both dice roll the same labeled side, which isn't meaningful (you would be able to conclude

Wow that figure is bad. The table compares only the situation where both dice roll the same labeled side, which isn't meaningful (you would be able to conclude that a d6 + 1 is a worse die than a d6 this way...). But at least the numbers on the bottom are right.