Chelsea's match against Arsenal is more or less a match of reputation and for Chelsea playing from home, it would sure have made Pochettino invoke the sack letter faster had it been they lost all the three points to Arsenal.
Brentford would be a great competition for Chelsea because they have alot to prove and it's known how the smaller teams may win or cause upset in matches once the season is getting hotter.
Chelsea will finish well this season if they keep up with the kind of performance in their last match against Arsenal.
Holding Arsenal to a draw has definitely made the Chelsea squad regain full confidence. In fact, Chelsea actually had many opportunities that almost became goals in that match. But the real test for Chelsea will start next week. Against Brentford it looks easy. But we also have to look at the history of meetings between these two teams last season. Well, Brentford managed to hold Chelsea to a draw and Brentford also managed to get 1 win last season against Chelsea. Which means Brentford really cannot be underestimated. Because Brentford is quite famous for always being able to make things difficult for the strong teams in the Premier League. But Chelsea must win next week if they want to return their reputation to a better place.