TLDR; Tar patch's Resistance debuff across all the AT's Dark Miasma, and Controller's Dark affinity, are flagged as unresistable, in both PvE and PvP. The pet version that NPCs use is also flagged this way, but only vs players. It allows for any enemy to be defeated notably faster than normal in comparison to other -Res powers, particularly against enemies with high resistances such as Hamidon or Incarnate Trials.
I did some tests in AE with two defenders against a random boss I made. I used cold domination's sleet for comparison as it is another location based -Res with the same scale:
As you can see, the sleet was resisted as you would expect with 85%/90% damage resistances, with the -30% Res at 15%/10% effectiveness or -4.5%/-3% respectively, but the tar patch was flat out applied without damage resistance being taken into account.
So currently, you just need 10-12 tar patches to floor any foe's resistance(I believe -300% is still the floor anyway).
I believe this is a problem that need addressed ASAP. Even enemies with 90+ resistances like Hamidon would melt in the face of 2-3 tar patches.
Also, the NPC version of Tar Patch has the -Res marked unresistable, but only VS players. This is less breaking than players having access to it, but
would be nice for all the resistance based armor sets if it was fixed.😃
Here is my WP tanker in AE against 6 sleets vs 6 tar patches:
(Note that I was +1 compared to the enemies, so the -Res went from 30 to 27 due to purple patch)
As you can see, my tanker(which is at 92.05% S/L Resistance) is having -162% res applied(-27%*6) in both cases.
Since I have 92.05% Smashing Res the -Res should be at 7.95% effectiveness. In this case 162*0.0795 = 12.879
92.05-12.879 = 79.171
Math checks out on the sleet side(with rounding).
On the tar patch side, we see a flat 92.05-162= -69.95, Ouch.
I also looked into testing other npcs with Tar Patch, but the only one I could remember was Desdemona, and yes, hers is also unresistable to players, but I think all the npc based Tar Patches point to the same pet anyway, so fixing that should fix them all.
