The reason TEC have all the AOE attacks as it seems to be their theme.
Look at how the cookie crumbles:
Advent
Faction, that when mature, can field ships of nigh invulnerability and excellent Synergy.
Ability Defense Examples: Shield Restore, Vertigo, Energy Absorptive Armour, Shield Projection, Telekinetic Push
Ability Synergy Examples: Amplify Energy Aura, Concentration Aura, Vengeance,
There are definite defense and synergy themes to their Cruiser and Cap abilities, no-one would argue that.
Vasari
Faction that relies on its impressive bag of tricks to defeat its opponents. There are tonnes of examples here.
Tricksy Type Ability Examples: Phasic Trap, Shield Disruption, Distortion Field, Jump Degradation, Microphasing Aura, Nanite Dissembler, Gravity Warhead, I could go on there are seriously loads here.
Including their Phase Missiles, Vasari are the magicians with a loaded shotgun in the top hat.
TEC
Brute force faction in almost all categories. Brute economy and best stat value per credit for almost all their ships,
Brute Ability Examples: Well, you already laid them all out. The Big Red Button, Missile Barrage, Radiation Bomb, EMP, again I could go on but they have already been pointed out.
Brute force all the way, whether its their economy or damage per credit or their abilities. Perhaps lacking in finesse (like their ship models) but you cannot doubt their brutiness 
