Ermmm.... Bosses wont stay still and trowing them with a aoe granade or db shot is the very reason for them to move more! Yes, walker wont move, but bh is far more effective against it. And for the damage. Base damage is about the same on all launchers, wolf packs and other perks are what makes differences. And solar grande with max 10x92damage aint shit compared to 16 wolf pack rounds which not only douple the overall damage but make it x2,5 (like from 4000 base to 10000). And if Ir Yut is still moving meaning hasnt started the song yet, ghorn hits her every time with tracking ability. While db has to be aimed and forecasted her moves.