It is pretty much a 2-shot ATM-3 launcher with improved missile to-hits. I wanted to try to take advantage of the WIGE mobility buff with a hard hitting (if limited) salvo of weapons.
I have a feeling, though, that the armor will outlast the weaponry. If the main gun is hit and the missiles are empty, all that's left is the MG and frenzy.
On a side note, I really wish that WoR had cannon WIGE protos, the art for the ones they had was amazing.