There is certainly plenty of work for the 2016/17 champions to do if they are to close the obvious gap to their successors.
The pressing was a major factor in the City play. Gone is the back three, replaced by a flat back four: the marauding wing-backs now cautious full-backs holding the line. Now they need Alvaro Morata - a struggler on Sunday - to click. His team will be playing host to Manchester City next Sunday.
Alonso was one of Chelsea's standout performers in a disappointing season, scoring seven times as he was named in the PFA Team of the Year.
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Both goals came courtesy of fine team moves - and both were started by City's centre-backs.
Bravo fumbled another Hudson-Odoi strike moments later, with the rebound hacked away as the Chelsea winger caused increasing problems.
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Two-goal Aguero was replaced by Vincent Kompany, with the Belgium defender untroubled as City strolled to the most comfortable of Wembley victories, Jesus denied their third goal by Caballero's save but Moses nearly pulling one back after a scramble late on.
Resolving the managerial situation hasn't ended uncertainty around Chelsea. It may be early days but the ramifications of holding onto Antonio Conte while negotiations with Napoli over Maurizio Sarri rumbled on were there to see on the Wembley pitch yesterday. Although Foden played in City's final game of last season, it was only to ensure he won a title medal, but this season he clearly has every intention of becoming a permanent fixture.
Cesc Fabregas's ability to control the tempo of the game and take responsibility in the middle of the field sees him edge out his younger rivals. Right now, it is Bernardo and 10 players more. But there was one man who had some success: the Blues' thrilling teen Callum Hudson-Odoi. The striker was fit for the World Cup, but Argentina was eliminated in the round of 16, ensuring he left Russian Federation two weeks before the tournament ended.
Even though the game - contested between last season's champions and the FA Cup winners - is largely considered a pre-season crowd-pleasing friendly it still has a trophy for the victor.
Despite the return of several stars though, a number of youngsters should be starting against Chelsea.
And having only had a limited time to work with the bulk of his first team squad, Guardiola said he was more than satisfied with how his players performed on what was an energy-sapping sun-drenched afternoon at Wembley.