Ull be dealing about 20k per swing when connected.
thats not a lot I do 50k a swing
U are counter type so u dont swing anything, u just deal dmg when u get hitted. Ur killing speed also depends on mob's aspd. Lets say a mega hits u every 2 sec, u deal 50k every 2 sec, while an autoskill type will deal 20k per seconds (40k every 2 sec) wich is pretty near ur dmg.
I wouldn't get your hopes up to high we servants don't have high matk regardless. ATM im Gible gerust Strug moldus Snow earmuff tarna Spec mezza, luster ring I do find that counter auto magic is more effective though since our def/eva isn't the best.