not sure how you are managing that, my companions die in seconds when trying to do the dailies and if i haven't killed the strong that practicually one-shotted my companion, i will be close behind, then in came a commando and just AoE'ed the lost down and just had the strong to take out.
then you must be doing something wrong...cause even before end game, my guardian and her Kira would kill 2-3 groups of mobs before needing to stop and heal up. i never even used Doc. Kira just made things so much faster. now that i'm level 50 in BH/Columi, and Kira's in Tionese/Columi, we just steamroll through everything and barely ever need to slow down and take a breather. she just kills things so fast while my guardian is a taunting brick wall. it's ridiculous. i shudder to think what kind of wrecking ball she'll be when i finally get her in full BH.