Most of these pictures that show Iran before the revolution also show upper class citizens. The most people, especially outside the big cities, lived in relative poverty. So it is like showing pictures of the Russian aristocracy before the revolution to show how good people had it under the Tsar.
Don't get me wrong, I'm in no way shape or form a fan of the Ajatollah regime but the picture is more complex and nuanced then many people think and just showing two pictures from before the revolution and now are misleading at best.