Anything can happen in a football match. Yesterday's FA Community Shield match was enough to make Arsenal have a good mentality, but it is not a guarantee for another game later.  At the moment they are just as strong and ranked 1st and 2nd at the end of the EPL last season. It's hard to guess the outcome for a game that hasn't ended yet. Another that Arsenal the new season will have a busy schedule, it will create a new challenge for Arteta.

In fact, I think it will be difficult to guess the strength of EPL clubs because they have made a lot of transfers. But at the beginning of the season there are usually clubs that are always late to get hot straight away.