So, it was suspected and reported awhile back in AoM days but i havent seen any actual tests, so here it is.
Modded AoC to reduce total damage by 100%. As you can see, i’m also 100% immune to all the debuffs such as stun, -total rr, -total damage.
I suspect that the reason is this:
Basically DR applies to all of aforelisted parameters, because they are written as the damage.
It makes DR the most valuable stat for player to gain (iirc curently War Cry has the biggest value which is 33), but most importantly it is the most dangerous stat that enemies have, due to it ability to reduce players defenses. And unlike the player, some of them have up to 75% of it.
Previously we/i though that DR only reduced the lifesteal twice, where it both decreases the value and the damage, but apparently, it just reduces everything.
Update
Update2