Very informative post Peter
.
I have a question now too :
Is there anywhere detailed information on the freespawns of both Ermors ?
I always had the impression that AE ermor gets at least 3 times more troops than SG but this is very subjective .
I personally still favor AE ermor a bit . If the enemy has lots of priests things get ugly for AE but since you get so many freespawns you can just build a lot of small raiding Groups of 200-500 undead which can easily kill most SCs .
So forcing your enemy to build lots of anti-death mages and priests while you lose only fodder which spawns really quick again is nice .
Your enemy can use e.g. flames from the sky of course but this is expensive
.
So hopefully your enemy wastes gems or is forced to buy otherwise not so useful special antiundead forces while you lose nothing .
You can make in midgame or early lategame 5-10 raiding armies each 200-500 undeads big rather easy with AE ermor .
This alone is already not so easy to stop or takes precious resources .
With SG this doesn't work as well though , at least not in my personal experience .