Wenger opted to step down at the end of last season after nearly 22 years in charge.
For example, last season they has the joint third best attack in the Premier League with 74 goals, but they only had the eighth best defence, having conceded 51 times.
"A little bit more smiles and happiness, but a little bit less committed".
Another advantage that Emery probably has going into Sunday's game, and by extension the rest of the season, is the fact he has had more time working with most of the players who were not on World Cup duty for their national teams.
And yet very familiar surroundings, with minor tweaks to the squad.
During the second period of former boss Arsene Wenger's 22-year reign as manager, the Gunners were routinely criticised for their tactical naivety. Winger Riyad Mahrez, the league's 2016 player of the year, joined from Leicester for a club record 60 million pounds.
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"They return on Monday, train Monday, Tuesday, Wednesday and today so you can imagine that they are not really fit and ready", he said, although he was happy that Chilean Alexis Sanchez was raring to go after a full pre-season.
Emery's priority - like Sarri at Chelsea - is ensuring there isn't another season out of the Champions League.
Ramsey was the club's Player of the Season last term, and will be a huge boost to our chances this season as we look to regain our place in the top four and in the Champions League, after two seasons outside the competition. The target for so many teams, particularly the promoted trio of Cardiff, Fulham and Wolverhampton Wanderers, is just staying in the Premier League.
Referring to his summer signings - goalkeeper Bernd Leno, defenders Stephan Lichtsteiner and Sokratis Papastathopoulos and midfielders Lucas Torreira and Matteo Guendouzi - Emery insists balance is the aim.