ok you are right
the auxiliaries are at least 50% of the roman trained manpower.

what i had in mind is, that in a typical battle the Legions had the real job to do.
(yes i know there were battles, where legionaries even didn´t need to fight)

the legions shifted through the border regions as necessary while the auxiliar troops often were at the same place for much more years than a legion.

also many auxiliar troops don´t fight "permanently"....the legions do, because they are relocated often to the conflict areas (at least with vexillations)

therefore the Segmentata armour see pretty much battle time.
i dare to say, that certainly there were auxiliary mail shirts which never had seen a real battle.
the other way round i would say that hardly a segmentata can be found which was free from battle traces.




and you are right, that this is not relevant for EB, but a good discussion is also nice to see (and it helps some people to learn something about history )