Britain Top EE Nation?

In July I noticed several headlines hailing Britain as the top nation as far as energy efficieny is concerned. Upon checking this out I find that the reoprt from the American Council for an Energy-Efficient Economy only looked at 12 nations; and then Britain scored 67 out of a possible 100. Still, credit where credit's due - the list of nations was for 12 of the world's largest economies (accounting for some 78% of global GDP). I guess it's a case of "Well done, but could do better".