It is too late for arsenal to fight t get the title of the league, even if they succeed in defeating Chelsea the point difference between Liverpool and arsenal it is impossible for arsenal to get to that point. It is possible for arsenal to beat Chelsea because they already have good performance this season than Chelsea but arsenal can be funny sometimes and Chelsea can be very tough in their games sometimes despite they are below in point. But for sure this game will be interesting and for me can't predict what will be the outcome of the game.
Yes I agree with you, even if Arsenal wins this match, it will not have a significant effect on the points difference between Arsenal and Liverpool. Because currently the points difference between Arsenal and Liverpool is very far, which is 15 points. So just winning 1 match will not make the points difference between Arsenal and Liverpool close. But even so, it would be great if Arsenal won this match. Because if Arsenal loses this match, their position will definitely be very threatened. Because currently Arsenal is in 2nd place with 55 points, and while Nottingham is in 3rd place with 54 points, so with this, of course Arsenal's position will be very threatened if they lose or draw with Chelsea. Therefore, Arsenal must be able to bring home 3 points in this match.
In addition, Chelsea's performance should not be underestimated at this time. Because even though in reality Chelsea's performance is unstable, we need to remember that in the previous meeting Chelsea was able to hold Arsenal to a draw. So with that, I think we need to consider this for predictions in this match. But even so, I personally will bet on Arsenal in this match. Because if you bet on Chelsea in this match it will certainly be riskier. But if you are hesitant to bet on one of these teams, I think it would be safer if you just do BTTS in this match. Because by doing BTTS the potential to get a profit is certainly much greater, although basically the nominal profit is not too big. But BTTS provides better security.