Mikel Arteta denies the current Arsenal side are at the level of Arsene Wenger's 2003-04 squad -- dubbed "The Invincibles" -- despite their early-season success.
Wenger led Arsenal to the Premier League title in 2004 after an undefeated season that was part of a 49-game unbeaten run.
Although the Gunners have already won five of their six matches this season, Arteta insists there is a long way to go before earning the Invincibles tag. However, he believes the club's squad depth is contributing to their winning run.
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"I don't think we are at that level yet, but competition makes everyone work harder so it is a great thing because it raises the level," Arteta said. "If you don't play well for one or two games, then you can be dropped.
"We have players to come back like Santi [Cazorla] and Abou Diaby, and that's the way we want it. When it is really tough, everyone is at 100 percent and that makes a big difference."
Arteta, who returned from injury in Arsenal's Champions League win over Napoli on Tuesday, has also praised the influence of teammate Mesut Ozil, with the German having an immediate impact in all competitions.
"It was a great message from the club because everyone was really expecting a top, top player, probably a striker rather than a number 10, but in the end, we got an amazing player and that gave a lift to everyone, not only us but you can see the people are excited again to come and watch, and that makes a big difference," he added.
"A player like Ozil gives you a step forward quality-wise and gives you another player on the pitch who can decide the game for you. He proved again that he is able to do it, and that's always great. The more players you have like that, the better chance you have."
The 31-year-old was coy on the prospect of Arsenal winning the Premier League and said he expects the Gunners to face a stern challenge for their first title in a decade.
"I always said this is the toughest league to win because you have five or six candidates this year to win it," he said. "It is still very early stages and nobody has really done anything yet but at least we are looking good, very solid, winning the games, and we have got a gap to some of the other teams now. In the last few years, it has been the opposite, so that is very positive."