Arsenal's defense has been a major factor in their success, with the team setting a new record by conceding just three times in their opening 11 games of the season. The team's ability to organize and defend effectively has been praised by manager Mikel Arteta.

Liverpool, on the other hand, has struggled with four consecutive defeats, raising questions about their summer spending spree. The team's new signings, including Alexander Isak and Florian Wirtz, have yet to score a Premier League goal, while the team has conceded 17 goals at the same stage last season.

Liverpool's manager, Arne Slot, has been keen to use his attacking options, but the team's lack of balance was exposed in their loss to United. Slot played with five forwards in the final half hour, but this approach ultimately led to United's second goal.

Sunderland, meanwhile, has made a strong start to their Premier League return, matching their best ever start to a Premier League campaign with 14 points from eight games. The team's squad overhaul with 14 new signings has put them in position to end the trend of promoted clubs sinking straight back to the second tier.