The same things seems to happen if you put in the sort of priorities other countries are generally believed to hold (so put in the environment, satisfaction, work life balance and so on and the Scandinavian countries leap to the top).
So if there is any truth in the cliches, countries do seem to optimise for what is important to them. Which I guess is what you'd hope happened.
As an aside there doesn't seem to be too much you can do to stop Australia being a great place to live - they don't have a slider for "Deadly animals".