Ultimate weapon stats: 30 boss, 30 ignore mob, 6 total dmg

Does ignore physical/magic ATT = ignore def?

ALSO since sacrifice is not affected by monster def, does ignore def help at all for DrK?

I believe it does mean def. Never seen an ignore def stat and ignoring monster att when attacking doesn't make sense.

And i think it would only help when not using sac. So it wouldn't really affect 1v1 but for anything else with high pdr or in special situations (bga being not in te sac range all the time so he'll stun you otherwise).