Look again. The point isn't that he's using blue for red and vice versa, the point is that the 3d chart distorts the information. In a 2d chart, we'd have equal

Look again. The point isn't that he's using blue for red and vice versa, the point is that the 3d chart distorts the information. In a 2d chart, we'd have equal shares for each color. Since it's 3d, even though blue has a smaller slice, it gets more pixels.