Are you honestly implying that countries like Saudi Arabia are richer than Western European states like Switzerland?
The darker purple the color, the higher the GDP per capita, the more prosperous the nation. Tell me if your Gulf oil states are the most prosperous. They aren't even close.
I almost can't believe how ignorant you are. That is not an insult, it is a fact. If anything you should be embarrassed to enter a discussion of which you know next to nothing about. For your own sake, educate yourself.
I gave you general trends, you wrongly assumed I was talking in absolutes. Your fault, not mine.