Why are the atlanta hawks doing so well? (by the way, I have lost faith in ESPN/Sportswriters opinions)?

They have an all right bench, the only problem is if injury hits, whose gonna replace someone, just like what happened to Josh Smith. now u have to weaken your bench to put a player in his spot. ALso there is no big man to backup Horford, i mean ya Pachulia is decent but he is not going to be able to play against the power big men of the league. If anyone gets hurt on Hawks bench, then they are in big trouble. Great starting line up though