All solid reasons guys and I was in the exact same mindset when I built my model. Its the go to option for most and im not knocking the HWCs, their sick. however in various games I did find when my opponent had legitimate ways to threaten him or bog him down badly (gants, charnal scarabs, grav bikes, beast packs) or his HWCs just didnt have ideal targets the 2 shots felt underwhelming. I gottta say though disi ravs arent even in the ballpark of the potential damage of that weapon.
Now all that said I still cant squeeze it at 1.5k but anything higher its my default option. (I play anything from 1k to 1850).