The entire mechanism on how Lucky's gems improved the quality of a mech was hard to explain.
Ves would have to define the quality of a mech and explain what variables influenced this parameter.
There was no precise, numerical measuring stick for quality. Just like the much-despised mech performance index, it was a bit simplistic to boil down the quality of mech by a single word, number or description.
Mech designers developed both a theoretical and instinctual understanding of quality when it came to mechs. Their judgement might differ from each other depending on how they ranked the aspects they cared about the most, but in general their opinions didn't diverge too much.
The quality of the Bright Warrior and the four sets of add-ons that made up its modular configurations were quite good. Ves would even call the end product fantastic.
Yet that was still separate steps too far from the insanely high standard that was called masterwork.