Well, we have scored only 3 less than Arsenal and Liverpool and have conceded far less than them. 7 less than United but they were boosted by their early season form. As for City, well, never mind...
EDIT: Sad case but also gotta remember that we don't have as many goalscorers as the other sides. Our top 5 scorers in the league are Morata (8), Alonso (3), Hazard (3), Batshuayi (2) and Pedro (2). That says a lot, doesn't it?