The strength in the attacking line is indeed slightly better than last season, but considering the result against Liverpool, there may still be many weaknesses that Arteta needs to address, as they struggled to find scoring opportunities. The defeat to Liverpool cannot be a benchmark for overall strength, and that's understandable, as Liverpool themselves also struggled to find scoring opportunities in that match.
Yesterday's defeat could not be judged as a failure but the defeat against Liverpool reduced Arsenal's chances of trying to win the title this season.
Arsenal's attack line performance is good but like can't take advantage of good opportunities against equivalent clubs like Liverpool.
Mikel Arteta must give a little change to the attack line if it does have the motivation to try to win the title this season.