Arteta will definitely try to compete with Guardiola, but my guess is that Arsenal will have a downturn at some point. You see how Guardiola brings the team to the peak, at the beginning of the season they don't always have the best game, but towards the end of the season they reach their optimal form and I think this is a very correct strategy.
Arsenal, on the contrary, started the season very well, but in the most crucial period, at the end of the season, they lost all advantage, conceded too many goals and as a result lost the championship to City. If Arteta does not change anything and everything repeats again, then most likely the result will be the same.
I think Arteta gained significant experience from last year and will warn his players about this. Manchester City were lucky because last year Arsenal have been losing in the league with huge inconsistencies lately. I don't think we will follow the same scenario this year. If Arsenal takes the lead this year, they will continue to develop various tactics with Arteta to use this advantage.
I am feeling right now even he is young and having his first job as coach but doing impressive job even we can recommend him as one of the best soccer coaches in world right now because his tactics and chemistry is amazing, and he already has few good results from his start as well which are going to help him in near future for the better results in last season he fails to have any big success due to some injuries and other issues, but now his start is aggressive, and he will surely be going with his own style which will help his team for the better end of this season.
In first game of the season, as he gives tough time to team like Manchester City this is impressive and now most chances pundits will also feel good about their end of the next season hopefully now he will change his way with learn from his mistakes which done in last season.