Arsenal wins by 5 goals to 1 when they met Sunderland. This is a proof that Sunderland isnt the right opponent for a big team like Arsenal. And Arsenal is sometimes able to be so productive as well.
Sunderland have no chance against big teams of the English Premier League and we saw this clearly in this game also. A score like 5-1 is not very surprising honestly. The Arsenal player Nketiah did great by making a hat-trick also. It should have been a great way for Arsenal to improve their morale before their next domestic league games. And just look at Sunderland's position now. They were in the EPL many years ago but now they are far away.