I don't think you understand the scale of the NCA. This is the largest army in the Human Sphere. You would have to add all the other planetary armies in PanO to have something larger. And the PanO army is the largest in the Sphere too, because it has the widest territory to protect. Even an elite unit has a lot of members in an army of this scale. You can't compare Aleph being able to give one Plasma rifle to one super advanced Recreation or even O-12 being able to partially equip one of its unit with a Plasma carbine and NCA being able to equip a part of the Swiss Guard with Plasma weapons.