To be honest, before the game I also thought Manchester City were close to winning, but Arsenal were tactically better than Manchester City in this game. They played a very good game against Manchester City. Arteta did well against his former coach Pep. However, I think Arsenal still need a good striker. Especially, they need a quality striker who can play in the number 9 position. On the other hand, we saw in this game that Manchester City are not ready yet. Last season they didn't start the league well, but they performed well afterwards. This season they could be in the same situation again.
I love the fighting spirit that Arsenal put in and didn't give up the match until Trossad had an opportunity to equalise the game. It was an unbelievable goal for Man City and Pep,for they were waiting for the last whistle so that they can celebrate their victory. But as luck was on Arsenal side,they snatched the victory at the last minutes from Man City which was sealed up by a wonderful penalty shoot out that gave Arsenal the best opportunity to revenge their victory that was snatched from them by Man City last year. Arsenal started this season in a miraculous way.
It is definitely something to see, they won the game at 100th minute basically, of course penalties was the official winning point but we are talking about getting the score at 100th minute and that should be a lesson thought to everyone in football world, specially to the kids. If you keep fighting and having a chance, then you are going to end up getting the result as well, if you give up then you are not going to win at all.
City got to defense way too much by the end, and they just wanted to park the bus for the score since they were winning, all of their players were at defense just trying to not get scored. If you keep playing like that then of course other team (arsenal in this c ase) will find a chance eventually.