doing 1-2-3 repeat as any melee job gives you more than 500 dps (tanks excluded because tanking stance, though some i210 tanks manage to go under 250 dps....). Even Ice mages can go above 700 dps.
Unless it's a "ruin only" smn, I'm not sure how you can achieve such a low dps without purposely spending full GCDs doing nothing. If anything, I'm impressed by the willpower of these players. It must be harder to be that bad than to perform on a good level on a regular basis.
