Ppl just dont know how to use smn correctly. A bit like pentacus who still believes ruin 2 only has an 80 potency. Ill try resume and simplify what damage a smn really can do. gonna leave out the eventual critical hit dammage and just give the minimum i can do to a single mob.
Mine is a lvl 90, still not fully allagan equipped so i can still deal even more damage.

With just a simple rotation i can constantly deal out 770 every 3 sec. Not 170 as Madoka seems to think.

ruin2-180, pet-180, miasma-80, bio-90, bio2-80, thunder-80, shadow flare,80.

every minute and can also deal 1700

2 festers-1700, energie drain-300