Recently, this blog presented a related map about Arabic Wikipedia: How many Wikipedia page views in a country go to Arabic. The map above shows it the other way around: The page views of Arabic Wikipedia are divided into these countries.
Most page views come from Saudi-Arabia, second comes Egypt, third are the United States of America. (The latter may be caused by technical factors.) A good place here does not necessarily mean that most viewers live in these countries because fewer people might read more (make more page views) in richer countries. In general, this map does not show a totally different picture than the previous.