from:
http://www.monkly-business.net/forum...ead.php?t=8646
"....
So, Cazic Thule can hit for 220, 240, 260, ..., 580, or 600.
....
The way Defensive works is it multiplies DI by 0.5
The Monk Stonestance discipline multiplies DI by 0.1 (too bad it only lasts 12sec eh?)
This puts the min hit at DB + DI *0.5, and the max hit at DB + 20*DI*0.5
So CT could hit for 210, 220, 230, ..., 390, or 400 with Defensive up"
I don't use the same terminology, but according to this post what I described above is how stonestance/defensive SHOULD work. its mob damage bonus + mob damage range(modified by stonestance/defensive %) is the amount of damage you should be taking.
The bug which appears to be manifest in this change is that the mobs damage bonus is being added to mob special attacks when it shouldn't be.