Until which goes too far? The Zirnitra or the Deacon?
The observations that I am aware of indicate that the Zirnitra used by the Collective is significantly more capable than the Zirnitra available to capsuleers, almost as if the blueprints that they are giving out are a downgraded “export” version, as I noted here. The Collective’s Zirnitra seems capable of hitting an afterburning frigate at any range and tracking it extremely well according to the most recent information that I am aware of, so I’m pretty sure that its gunnery systems are much more advanced than any dreadnought in capsuleer hands.