With the existing facts, it is difficult to say that Chelsea can get full points in the match against Arsenal even though they are playing at home. The Blues will need a lot of luck to do so, and hoping Arsenal play poorly is not a good idea. However, despite this, I think Chelsea can still provide interesting resistance in the match, and they will not make it easier for Arsenal to get the three points. On paper, Arsenal is worthy of being superior, it looks like Arteta will use the same formation when they won in the previous match.
It is possible that the formation that will be used by the Arsenal team will not be much different from the previous formation because remembering that with that formation, Arsenal was able to beat Manchester City even with a very small score. But this time Arsenal must hope to win with more goals even though it might not be easy enough for Arsenal considering that the match is at Chelsea's home ground. However, Arsenal needs to hope for this in order to gain more advantages.