Answer:
There are many difficulties which one can face while comparing the standard of living in different countries.
*Every country has different level of education, and its standard which make its citizens different from other country's citizens and pose different level of opportunities which definitely makes it very different in comparing those countries.
*Every country has its own different culture which make it quite different in comparison.
*Some countries have loads of working and earning opportunists but others have not this luxury.
*Some countries have huge populations which their government cant handle properly which effects their living standard undoubtedly.
