I am very happy to have found this thread. After getting my head handed to me three times in a row with my Sith Marauder (level 32 first two tries, then level 33), I followed the advice found here. I stayed behind the barrels, coming out only to use "Disable Droid" on any incoming droids (second and third groups). When the Captain sang my accolades, calling me a "war machine", I had to laugh, as all I did was stand and watch... then take all the credit. Hmm...