This list is Internet heavy, and I too would expect to see Java in the list, ahead of C# I think...
I’d definitely put Java ahead of C#
-1.1 billion desktops run Java
-930 million Java Runtime Environment downloads each year
-3 billion mobile phones run Java
-31 times more Java phones ship every year than Apple and Android combined
-100% of all Blu-ray players run Java
-1.4 billion Java Cards are manufactured each year
Java powers set-top boxes, printers, Web cams, games, car navigation systems, lottery terminals, medical devices, parking payment stations, and more.
I'm guessing C# is ahead of Java in the list because it's a list of skills "in demand" rather than in supply. Java skills are highly prevalent amongst grads with SW training, whereas C# is probably not nearly as much of an acquired skill. So, it's in demand at the M$oft vs. Linux houses.