After taking a 5-0 lead in the Portuguese capital last month, that may still have been the case, but the second leg often looked like little more than a training exercise for the Premier League champions .
Obviously, City are an elite team and would probably dominate most opponents.
Still, the fact that they can treat the champions of a country steeped in footballing tradition like Portugal as little more than a toy is really a rather depressing reflection on the modern game.
Sporting, to their credit, defended valiantly, albeit against a city significantly weaker than the one they faced in Lisbon three weeks ago.
Raheem Sterling went closest in the first half after a delicious ball around the corner from Phil Foden although his shot was saved well by Antonio Adan.
The game threatened to come to life just seconds after the restart when Gabriel Jesus finished well from a tight angle, although VAR intervened to rule him out for offside.
Such was the level of City dominance, Pep Guardiola even opted to replace Ederson with Scott Carson for the last twenty minutes or so, perhaps the least decadent example of decadence in football.
City qualify for the last eight after a Wednesday night in which we learned nothing.