Chelsea are trying their best this season, and we always see the unexpected from Chelsea. Although I can't say, but Arsenal are very much ready to have a win in this game, which I am doubting if it will be possible. Because viewing in their premier league performance both Chelsea and Arsenal performance is almost the same in some cases, I can even say Chelsea has more hope in premier league based on performance than Arsenal. Even if I am to predict it will definitely be a win for Chelsea or a draw game, because I think Chelsea have more chances of winning with or without Cole Palmer.
Actually Arsenal started off really good until recently they started suffering some form of set backs which has actually affected their performance but with Chelsea, they started off on a very average form and now they are progressively performing so well that they are now having the comparison you are giving them between Arsenal which we know much earlier before now wouldn't be their competitor at all, they are in very vulnerable state currently so if i see that Chelsea gets to win them, then it wouldn't be a surprise so much because i know for sure that its very possible going by their present form.