Guardiola's side featured a host of players who told the City boss they were ready to play at the Emirates Stadium on Sunday despite their draining World Cup duty in Russian Federation.
Not only are Manchester City the title-holders, but they are still unquestionably the team to beat this season.
Raheem Sterling opened the scoring with a cool finish early in the first half before Bernardo Silva lashed in City's second after the interval, leaving Guardiola to sing the champions' praises.
Welbeck is among the players to have been tipped to leave Arsenal before the European transfer window closes on August 31, with David Ospina, Carl Jenkinson and Joel Campbell also expected to move on. Unfortunately, we lacked invention to find the killer pass.
Welbeck has struggled for regular football since joining from Manchester United in 2015, making only 12 starts in the top flight last season.
To watch a live stream of the Arsenal vs. Manchester City English Premier League showdown, go to NBC Sports Live Extra, or download the NBC Sports Live Extra app for mobile devices and on set-top devices such as the Roku and Apple TV. Fifty-three seconds later, Sterling and Benjamin Mendy worked an overlap down Arsenal's right and the French left-back picked out Bernardo Silva in a crowded area for the Portuguese winger to rifle home.
The contest was the Gunners' first Premier League game without Arsene Wenger for 22 seasons and Emery's first competitive one since taking over.
"We are delighted with him and would like Raheem to stay". We'll do our effort to make him feel we count on him - and we do count on him.
"We arrived after a hard season and I told him I want to help him and would like him to be happy". City are working three years with Guardiola, building a team with good players and great stability. I think we need to improve. Guardiola's side looked unstoppable for the first half an hour but then took their foot off the gas and allowed Arsenal back into it, although they won at a canter. This process is normal. However, Wanderers will be disappointed it was not more having played against 10 men for the majority of the game.