In a few seconds the GTVA can deploy a sixty-fighter strike to engage the Naras and damage them enough to require yardwork to repair.
I don't think a node can sustain that many ships at a time. Remember all that has been said about the Delta-Serpentis node as a bottleneck for the GTVA forces in Sol, which is the very reason they have to use logistic ships in the first place. Ships would have to come in waves, that can be dispatched by the superior UEF fighter force more than easily. And Naras can take care of themselves against fighters and bombers more than well enough. Especially given the global inefficiency of tevs bombers. And especially since in that situation they would be covered by a substantial number of Sanctus and Karunas + fighter complements. You'd need beam barrage to break such a formation, and any beam-carrying ship would be nullified before going anywhere in rage, especially given the bottleneck property.
Given the amount of damage the Gefs have been able to put during WiH, for example the fact that they would have disabled and disarmed a fully armed and refitted Hatshepsut-class destroyer if it hadn't crash-jumped. I don't think we can really consider the Gefs as "a step below militia" after such a show of power. They are numerous, coordinated and well-armed for a non-military organisation. You can argue that they have been supplied by the GTVA and the UEF that both wanted to use em to weaken the other, the point still stands.
So I think it's perfectly fair to compare them to what the surviving elements of multiple waves of tevs fighters through a well-defended node would become after they disperse and hide in the system to conduct guerilla warfare. Because that's basically the only remaining option for the GTVA in that scenario.