It depends who we consider our main rivals I guess. I think Man City are most likely to win the league. Two draws means we only get 2 points and we drop 4 though we don't lose any ground on either. Arse or Chelsea. A win and a loss means we drop 3 points, lose out to one of the teams we've played, and gain a good amount on the other. So, if it's a choice, a win against Arsenal and loss to Chelsea is preferable to a draw against both. A win against Chelsea and loss to Arsenal, means the pack can close on us a bit and the top 2 will stretch the advantage.
Just go and win them both, but mostly Arsenal.