Something else I've noticed, although it's too complicated to be worth putting into a guide; the weaponry of each faction also is biased towards certain archetypes:
Aeon is αeon: it has the most alpha strike damage of any faction, with the Aurora, Fervor, Obsidian, T2 PD, T2 Gunship, Destroyer, Strat bomber, Tempest, sniper bot (though technically not exclusive) and in the most extreme case, Mercy (literally all alpha damage). All of these units live and die on their strong initial punch in a fight. Except for the strat bomber I suppose.
Cybran wastes the least DPS: it tends to have the most high ROF units (Mantis, Rhino, Cerberus, frig destro and battleship, Brick as well as ML with constant laser), and the most AOE on applicable units (T2 Gunship, T2 and T3 arty, T3 mobile arty, strat bomber, Scathis). Their tactical missiles can also retain some of their damage even after being hit with TMD since they split.
UEF and Seraphim are between the two, although UEF is slightly more alpha strike biased and Seraphim wastes less DPS (lots of high rof and especially beam weapons and 2nd place in AOE)
And of course there are notable exceptions like GC, Blaze, and Restorer for Aeon or Megalith, Fire Beetle and Hoplite for Cybran