Thread:Volknur/@comment-24436263-20140211095302/@comment-5264386-20140211111923

You can only make the Abyss Greatsword with the Soul of Artorias; the other two Greatswords of Artorias are forged using Sif's soul. Anyway, I'll make a table to simplify the comparison:

Anyway, these are just my opinions, but I hope they help you in deciding which one to forge. :)

P.S. Bear in mind that you can make both the Abyss Greatsword and either the "Divine" or Cursed Greatsword of Artorias, since they use different boss souls.