they are like peregrines.
if you use plasma or disruptor than they will be really good (former because your consoles would affect them, latter because your proc would).
esentially they are peregrines with plasma. tbh I wouldnt really know the difference between the peregrines and scorpions dps, and for my vesta it doesnt rly matter, I just like them because they are easier to keep track of than the peregrines, because they have these nice blueish engine trail
I can tell you that in my last CSE run they dealt 600 dps, but this wont help you, since I barely used them, things were going down too fast
A kind soul once showed me why I didn't want pure fighter pets. We went into a 1v1 with Armitages where he had Danubes and I had fighters (Peregrines IIRC). My fighters only added a bit of dps whereas his Danubes kept locking me in infernal tractor beams as well as adding dps. I kept losing because of them. His point was well made and I now run Danubes!
PVP is a completely different game than PVE and the sooner everybody realizes this the better off we'll be. In PVE, fighters do fine.
On topic; I tried the first level Scorpions and found them lacking compared to basic To'duj fighters (carbon copy of Peregrine). The bleed through from plasma wasn't enough to offset the DPS hit from using a slower firing torpedo. I expect the ultra-rare tier 5 Scorpions to fare much better. Let ya know in a week.