This is the question actually:
The scores reflect the percentage of subscribers who answered "definitely yes" to the question, "Considering all factors (price, performance, reliability, comfort, enjoyment, etc.) would you get this car if you had it to do all over again?"
Quantify's the point that JustBob and SirOsis keep bringing up, that there is more to vehicle enjoyment for humans than just raw numbers.
It's an interesting counterpoint to CR's normally dry and objective review and reliability ratings. Correlates well with the owner enthusiasm I've seen for things like diesel 3/4 tons, Jeeps, and yes smart cars, despite low ratings for each in some of CR's other rating categories.