There are a lot of these "interesting statistics". If you exclude the places where someone did well, their opponent will appear to do better! Duh?
In a close race, you can make almost anywhere a swing "county".
When someone wins the popular vote by 3 million votes, and their supporters want to tout that as evidence of her broad appeal, it helps to note that the entirety of the difference came from just one state (California, 4+ million) or just two metropolitan areas.
I look at that information as more confirmation of the genius of the founders in setting up the electoral college.
Further, it shows how divergent California (and New York) are from the rest of the country.