Okay, so it more or less matches with intuition. I did forget to mention one Part, though.
The Knight Core provides +2 Armor : +1 DUR on top of any Stat Boosts the Options might have, and the Asura Core provides two Arm Slots that can have their own Stat Boosts as well. But the Dual-Core… doesn’t seem to do much?
It takes up a Core Slot and your Fabled Part allowance to give you +1 Core Slot and +1 Fabled Part allowance. That’s just back to square one, to my eye. The only use I can see is that it has a chance of taking the Break for the Core attached to it, which doesn’t inspire confidence. Is it meant to do anything else?