So, the AM pretty much suck. Their Warlord is a much weaker version of Zarathur, and half of the Guards main units can't even use Strakens ability (because they are conscripts/scouts/psykers/vehicles etc., rather than soldiers). Many of his units (Mortars) don't work with the tokens (not army units), and they lack any sort of direct damage actions to deal with enemy units. If you ally for more soldiers/warriors, many abilities/events/support are AM only and won't work with the allied units.
Support is nice, but at some point the rest of the deck needs some synergy. There are way too many parts that just refuse to work with one another to let the entire thing come together into a competitive whole. Maybe with a few more cards released they will amount to something, but right now they really seem to be on the short end of the stick.
Edited by KineticOperator