I also was unclear on what the scorecard was. From elsewhere in this thread it's something to do with "Consumer Reports", which I've never heard of. Wikipedia helped with the rest.
"Consumer Reports graphs formerly used a modified form of Harvey balls for qualitative comparison. The round ideograms were arranged from best to worst. On the left of the diagram, the red circle indicated the highest rating, the half red and white circle was the second highest rating, the white circle was neutral, the half black circle was the second-lowest rating, and the entirely black circle was the lowest rating possible"
"Consumer Reports graphs formerly used a modified form of Harvey balls for qualitative comparison. The round ideograms were arranged from best to worst. On the left of the diagram, the red circle indicated the highest rating, the half red and white circle was the second highest rating, the white circle was neutral, the half black circle was the second-lowest rating, and the entirely black circle was the lowest rating possible"