Dps is in no way needed for a com.Your main goal as a COM is to take agro off your team mates . To do this ,skills which include taunts and a pistol/shield or Cannon is recommended. Take a look around forums , there are some really nice builds which will help a lot.

side note : The reason why people stress OP to focus on DPS for PVE is because of their de buff which pairs nicely with a lot of damage very quickly.