sanctuary not adding +% to undead

[pbrain]

Now we might be getting somewhere.  So the global 50% Hell physical resist is gone, but zombies have it innately in 1.10?

Yep. The Physical Damage resistance is dependant on monster type now.

According to your theory (i.e. the piercing is working but not the ED%), then slvl 1 sanctuary should kill my Hell zombie in the same number of hits as slvl 26 sanctuary.

That's what it looks like. I tried to test in hell, but it was too painful (For testing purposes, I *hate* how crowded the blood moor has become). I prefer to avoid modding things for testing, but sometimes it's so much easier. So I tried on modified nightmare zombies with 50% resistance. With Sanctuary my numbers were essentially as above, without they were in the high 60's as expected. I then upped them to 100% resistance, and the sanctuary numbers were still unchanged. So it looks like the piercing effect is still operational, despite having been "fixed" in patch 1.09 according to patch.txt.

I'm interested to see your numbers.

Added to my post above as you were posting :D