As always, I would like to point out that these kinds of surveys of public opinion are not really evidence of anything besides public opinion itself.
You cannot assert that a certain country has more or less of some quality simply because more people in that country said they think they do more frequently than people in a different country did.
For example if you asked Americans (particularly those in the south or rural areas) if they thought their country was more “free” than the rest of the world, you would probably get higher numbers than you would from most other regions of the world despite the fact that America is not that free relative to much of the world.