I was trying out the Arthas skin in the try game and decided randomly to take the level 1 talent for his trait (can't remember the name of it if gives extra damage that stacks).
So I was messing around and just kept pressing the complete quests button till I had enough stacks to one shot Deathwing. After I did I went to one shot the towers but imagine my surprise when I didn't one shot the gate! Reset the fort and try again, towers get one shot but gate dosent.
I had around 5700 bonus damage and gate had around 5300 health. Now judging by the fact I could one shot deathwing who has 40 armor that means gates are immune to getting one shot for some reason. This isn't usefull but I found it funny as hell.
