1978 World cup Iran got 1 point with 2 goals scored, Same group as Peru and Holland
- Holland went on to finish runner ups
- Peru eliminated in 2nd round
1998 Iran got 3 points and scored 2 goals, same group as Germany and Yugoslavia
- Germany eliminated in Quarter finals by Croatia
- Yugoslavia eliminated in Round of 16 by Holland
2006 Iran got 1 point with 2 goals scored, same group with Portugal and Mexico
- Portugal went on to finish 4th
- Mexico eliminated by Argentina in Round of 16
2014 Iran got 1 point, with 1 goal scored, Iran was in the same group as Argentina and Nigeria
- Argentina went on to finish runner ups
- Nigeria eliminated by France in Round of 16
2018 Iran got 4 points with 2 goals scored, same group as Spain and Portugal
- Spain was eliminated in round of 16
- Portugal was eliminated in round of 16
If we go with the performance of the teams in our group rather than their HISTORY, Iran had the easiest group in 2018 WC. Both teams (Spain and Portugal) failed to make it past Round of 16.
Of course, with football you can never compare things on paper, depends who they met, injuries etc. So take this "stat" with grain of salt.
I personally believe, we could quality out of our group in 2018 had we showed a bit more courage and attacking, I mean Morocco who we beat (some say we got lucky with the own goal) tied Spain!