In Spain, they use the phrase 'ganar sin despeinarse' to describe victories as handsome as these.
It translates as to win without messing your hair up, and Manchester City's magnificence here was such here that you might imagine some players were able to exit Vicarage Road here without breaking into the merest sweat.
This was a masterclass, the kind of orchestral exhibition for which Pep Guardiola is famed.
Last season, there were moments that implied we may witness greatness from Guardiola's City, notably a first-half performance at Old Trafford during a splendid start to the season.