The argument seems to amount to how what would be just flavor text in regards to gear and tech of the mechs. But how apparently it's super serious given your oddly strict focus on it being all very defined and then something about sword performance being dropped. And how this is odd for a free form environment.

 And then later in which the purpose of all this hoopla involving gear and tech being revealed it's for what appears to be some sort of rock paper scissors type deal of weaknesses and strengths for fight scenes. Which as an aside probably should been mention in the intro post because there was no outright indication that would serve for that purpose. 

And then at least for me I changed my argument to be about this rock paper scissors thing being better suited in a more structured environment than a more narrative focused one of pure freeform. 

As for the sword's technobabble: It's nanotechnologically constructed blade that is dynamically 'forged' on command into a non-eutactic solid. Nanoscale whetting devices insure that the blade is both unbreakable and lethally sharp.