What goal difference really means
Goal difference decides titles and relegation, but the number hides the context that matters more.
Every season one team finishes with a big goal difference without ever looking convincing.
Goal difference is goals scored minus conceded; how a team gets there decides what it means.
Definition and ordering
Points, then goal difference, then goals scored in England; head-to-head first in Spain and Italy.
Why it misleads
It ignores the quality of the opponent.
When it decides
Only when two teams have identical points, once or twice a season.
Reading a table honestly
Read three numbers together and add the fixture context.
Common mistakes
Assuming third is stronger than fifth, and ignoring games played.
Conclusion
It measures the size of wins, not their difficulty.