Weapons & Relevant Weapon Modifiers
Lets see the weapon modifiers first:
Kinetic weapons - Thermal modifier
Thermal weapons - EM modifier
EM weapons - Kinetic modifier
Ship Resistances
Then lets take a look at the general/default resistances of any ship:
Hull
Low Kinetic Resistance
High EM Resistance
(best weapons: Basic Kinetic & Modded Plasma)
Shield
High Kinetic Resistance
Low EM Resistance
(best weapons: Basic Plasma & Modded Thermal)
Result
In theory, best weapon to use? Plasma.
Because it deals EM damage, which allows you to deal maximum damage to enemy shields.
Then you can enable a mod and convert your damage to Kinetic, and maximize your hull damage with it.
It grants you unparalleled “freedom” on the fly.
See the pattern here? Plasma weapons, with the use of their weapon modifiers, are able to inflict maximum damage to an enemy ship both on shields and on hull. Combine this with high DPS output of Plasma weapons, and there you go… But my point is NOT the DPS output of them, my point & problem is Plasma weapons having a modifier that allows them to inflict maximum damage all the time.