Casters vs Soldiers is very dependent on the venue...
In one vs one, for example, Demo vs Conqueror, it can go both ways... Soldiers gain the impetus in 6vs6 fights... however, when numbers increase, say Jhebbal, Casters regain the advantage...
In Sieges, you gotta stack casters and not soldiers to win.
Nerfing the protection levels on Soldiers is not the way to do it...
BoA is OP in its current state, but FC, and despite the Conq community demurral, refused to revert it to its original state (KB at end of Combo, regardless of first hit though. Same goes for loads of insta CCs, including the Demo/PoM ones...
Coupled with a damage cap on OLP, i think conquerors will be quite balanced.
I dueled a full AA/ and t4 gear demo last week... the first time, i was taken by surprise, I was not expecting to see huge chunks of my HP disappearing so swiftly... After the KB, no exaggeration, he took away more than half my hp by the time i was up then i was kited to death. I changed my strategy, and ended up winning by a tiny margin eventually... We did a few more duels, he won some and i won some... The multitude of CCs that demos possess in their arsenal and their speed buff invalidates the argument that demos are glass cannons.
I think the same will apply for good necros, the class with the unending dots and which i hate the most, to answer the topic