Regarding point 1 - yes, a Warlock is strong not only with magic; regarding point 2 - in 3-4 turns, they can just as easily kill our army; regarding point 3 - I would like more details about the defense and 30% damage reduction of Necromancers from enemy spells (from Chaos magic). P.S. And my humble opinion regarding logistics - its role is important, especially on large maps.
Point 2. A mage won't be able to kill you with defense....
And I didn't say that magic damage is reduced... 30% physical damage is reduced - everyone knows that....