The jubilant celebrations from City's players and fans showed inflicting an early psychological blow on Liverpool was a moment to savour, regardless of the supposed warm-up status of the glamour friendly.
"An incredible final from both sides; no team can dominate for 90 minutes", he said.
Guardiola said: "We scored one more penalty than them, like last season, we made one more point than them, so at that level the distance is just one inch, that is the level sometimes, so congratulations to the guys".
"It was a good test for both teams". "It's nice for the players to realize what they will face this season".
City were slick and more clinical than Liverpool in the first half, but the Reds dominated the second period with eight shots on target to one. A heavy tackle by Trent Alexander-Arnold saw the winger hobble off in what could be a big blow to his prospects of first-team football going into the new season.
Manchester City and Liverpool played out a memorable title race last season.
After pipping Liverpool to last season's Premier League title with 98 points to their rivals' 97, City went on to complete an unprecedented domestic treble by adding the FA Cup to the League Cup they won earlier in the campaign. They will be in a different shape in a couple of weeks, for sure.
"They are a top-class team. United will be back and Arsenal as well, they both have good players, Tottenham as always, we saw that in pre-season, and Chelsea as well".
Leroy Sane hobbled off at the 10 minute mark, throwing a potential move to Bayern Munich in doubt.
City's victory was a well-time riposte for Guardiola, who this week hit back at Klopp's claim that the champions live in a transfer "fantasy land".
Claudio Bravo starts between the sticks for City, who has Sergio Aguero on the bench and Aymeric Laporte in the 18.
Rodri will come in for Fernandinho in the base of midfield with Kevin de Bruyne and David Silva providing the creativity.
Brazilian global Alisson starts in the goal and in front of him, Gomez and Van Dijk are starting in the central defense.
Joel Matip, second from right, heads home an equaliser for Liverpool during the second half at Wembley.
A Kyle Walker scissor-kick denied Mohamed Salah the victor on 93 minutes, with goalkeeper Claudio Bravo - who Guardiola felt was the man of the match - thwarting Xherdan Shaqiri shortly after.