Based upon the Stats from this thread on Muse on Minis: http://museonminis.com/forums/index.php?topic=5232.0
Here’s a breakdown of the Strong Points / Weak Points of Each Faction. Union is an obvious outlier because of the versatility of lists it can build with the choices they have.
We’ll start with an overview of all the Factions:
Then each faction 1 by 1:
If you’re looking for a statistical breakdown to help you make a choice on a faction, hopefully this will help a bit.