The Gunners were looking to end a three-match winless run in the league despite setting a perfect winning record in the Champions League on Wednesday to top the European log.
"The mentality is good," Arteta told the club website at the post-match conference.
"And to play with that level of enjoyment about where we are, and then with the conviction to believe in what we do and how good we are, and that we can beat any opponent, and we certainly have done that.
"But then you have to show the quality as well in this league to do it, and it came out in great ways from different players as well."
The Spaniard also praised Gabriel Martinelli's performance and Noni Madueke who came into the starting line-up at the last moment due to Bukayo Saka feeling discomfort during the warm-up.
"We talked before the game that it's going to be a long game," added the 43-year-old
"We're going to have to navigate through different moments. We're going to need everybody fulfilling their role that they have on the day, and I think the players executed that incredibly well."
The Premier League leaders will turn their attention to Tuesday's Carabao Cup second leg semi-final clash against Chelsea, where the Gunners take a 3-2 lead into the match.
Mikel Arteta said Arsenal "said something" about their title credentials after a ruthless 4-0 victory over Leeds at Elland Road ended a testing run of Premier League results.
Arsenal returned to winning ways in the Premier League after a 4-0 thrashing of Leeds United at Elland Road on Saturday.
Liam Rosenior said Chelsea's London derby against West Ham would reveal the true character of his squad as the Blues prepared for what he called their biggest match of the season.
Arne Slot has urged Liverpool to cut out mistakes as they prepare for a decisive Premier League clash with Newcastle United, with the Reds boss admitting the race for the top four has reached a critical stage.
