Arsenal's frustrations continued on Sunday after they lost 2-0 to visiting Liverpool in an FA Cup third-round match on Sunday.
The Gunners are coming off a woeful holiday period in which they dropped from first place to fourth in the Premier League standings, with Liverpool taking over the top spot.
Sunday added to the misery as Arsenal were kept off the score sheet despite a frenzied first half in which they probably could have scored one or two goals against their short-handed opponents.
Instead, Liverpool survived and came out a different side in the second half, eventually forcing an 80th-minute own goal and scoring deep into stoppage time to secure the two-goal victory.
For Mikel Arteta, who called Liverpool "the best team in Europe", Arsenal did enough to win the match, save for actually putting the ball into the back of the net.
"Well the performance was there and the amount of chances too," the Arsenal manager told BBC Sport.
"We just have to win the game, but we lost it and we are not capitalising. To win games we need to capitalise.
"When you are better than the best team in Europe and you generate that amount of chances. I have not seen a team do it against them like we have done it.
"It is not enough. The reality is, it is not enough."
Despite the result, Arteta remains confident in his team's abilities and is happy with the effort they displayed in the loss.
"Listen [do I say] play worse than Liverpool, be worse and we will win the game? When my team plays with this confidence what can I do? I am still behind them 100%.
"It is what it is and we have to continue to play the same way and be more efficient."