At least, because previously Arsenal managed to beat Manchester City, of course, this factor will make it predicted that Arsenal will also win against Chelsea. After all, we are all aware that Chelsea's situation and conditions have been devastated since last season, and have not improved until now. Therefore, it is natural that Arsenal remains the team that is projected to win this match and as such, the home and away factor is no longer important at this moment because on paper Arsenal will definitely win.
But keep in mind
from the last 6 matches
Pochettino has never lost a home game against Arsenal. 3 wins and 3 draws. Maybe this could be a factor in Chelsea's success in winning the match. Although the chance is small.
In football anything can happen, especially this is the Premier League, the most competitive league in the world. There are always surprises and maybe Chelsea has the luck factor to win the match.