Ha, Ok Norfleet, I made a mistake about AE Mages - I compared them only on paper and didn't correctly read the AE Unit List
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So AE magic is on par with SG magic. For high-level commander summoning, it not that hard to give a couple Dusk Elders a Skull Staff to get Senators, then a Skull face to have Consuls. And anyway you can have a 6+ Death Pretender to help.
Pocus,
SG units are breakable, but not easily, their base morale is 16+, and they are immune to fear. OTOH they create much fear themselves ...
Their MR is good too at 13+ (except Disp Spirits at 11). And it gets increased by Unholy prayers !