All weapons are for specific situations, and no two weapons are completely alike. Its unfair even to compare something as similar as the BAB with the Nitronome... but you CAN compare any two weapons per their roles by looking at them, and then by looking at what else could fill their roll and how well each does it.
In this case, DA/GF are relatively poor weapons to fill the role of primary elemental/shadow damage swords, whereas Sudaruska/Triglav provide arguably the best gunner side weapons for most situations.
Doc gets a +5, also, have someone else do Electron Vortex, while you do Triglav, LDers get shocked (The moment you release) and then get pulverized, perhaps frozen for another charge attack }=D