I have both a Divine Avenger and a Rocket War Hammer and I find that while the Divine Avenger has it's benifits, it seems that the Rocket War Hammer is better against machines and that although Rocket War Hammer deals only elemental damage, i have other swords that deal shadow and peircing damage so it's not an issue.
I feel the Rocket War Hammer is better than the Divine Avenger but i would like to hear your opinions.
Per hit, they are about the same thing, no big difference.
The hammer is better if you know how to dash without dying. DA also has a safer charge.