It is not GA alone that is hurting us. Nor is it a lack of GF. It is the combination. There are a number of teams that are worse in each of those. But no team is worse in both.
Buffalo is slight worse at scoring (1.97 vs 2.00). Yet they are much better at not allowing opponents to score (2.20 vs 3.08). So they are bit higher in the standings.
Philly is a fair bit worse at defense, allowing 3.49 GAA, but are much better at scoring, with 3.28 GFA.
Both of those teams are giving up more than they score, and both are sitting at 0.500 right now.
Vancouver is below us in the standings (technically they have more points, but we have 3 games in hand), yet is much a bit worse at scoring and at a bit better defending....so obviously not everything is directly relevant. But the same could be said about them as us...no team is worse in both scoring and defending as they are.