Arsenal will want to win this match because basically they are struggling to aim for the 2nd place. 2nd place will earn a lot more prize money than the 3rd place. Since I believe they will need alot more "amunition" for their next season.
On the other hand, Sunderland could be abit relax since they are still above Newcastle and Hull and even if they lost this match, they will only need a win to not be relegated

Thus being said, Arsenal will sure to win this match or atleast if you are concern about this, simply bet on both team to score though as Sunderland might try hard to score as well