The Sixers appear to have hit a little bump in their road, and it may have as much to do with whose been on that road as it does injuries to their big men (Spencer Hawes, Elton Brand).
Consider, the 20 teams they have beaten are currently a combined 251-384 (.395). The 14 teams they have fallen to are a combined 226-163 (.581). They are 6-8 against teams that are currently over .500; 14-5 against foes that are currently under .500.
Here are the current records of the teams the Sixers have beaten, and lost to, so far this season: