I have like 80 humanity atm.
Abyss does something like 250+250
Halberd does about 350+150
Both 500.
Halberd does more damage by about 30% in every situation (riposte,r1,bs).
Is this one handed or two handed. Halberd class weapons count as thrust I believe, so they usually do more damage in ripostes and backstabs. What are your weapon stats, i.e. DEX, STR.