@ Alex: More specifically, the small ships Avoid the Paragon until they have the numbers to swarm it. Paragon cannot force them to engage. Once they swarm, they charge in like a pack of xenomorphs. Even if you notice the swarm on time and escape, said swarm can retreat anytime, and you do not have much of a window to pick off maybe one or two out of the twenty plus.
Bigger ships like cruisers and capitals can try this, but they are too slow. Paragon can kite and blast away with HVDs and quad Tachyon Lances and pick off ships one by one. Once simulator progresses down into destroyers and frigates, it becomes like Aliens with the xenomorphs cutting off the space marines.
Before 0.8, extra speed (from Augmented Engines) and perks like hull regeneration made it possible to survive swarms in 0.72. Before 0.72, they did not Avoid, and if you could survive at the corner, there was nothing they can do. Onslaught with all skills maxed ate everything like popcorn back then.
If I pick any other ship for more mobility, the cruisers and capitals kill it. Onslaught cannot deal with all from Conquest's missiles, Astral's bombers, and Paragon's beams. If I try Astral, the bombers get picked off due to crossfire from multiple ships, then the Astral die. Only Paragon has the raw power and defenses to solo all of the cruisers and capitals in the simulator. But once it gets to the destroyers and frigates, Paragon cannot do much until they swarm, and Paragon cannot deal with twenty or more frigates pounding on it at once.
Re: Mora
At least Mora cannot kite. Heron can, and you cannot send your fighters alone at it very easily when Heron has fighters of its own to offset yours. I can send my fleet to swarm a Mora, and it will go down eventually. Trying to catch a cowardly Heron with HVD is a bit of a pain.