Jeez. Thanks for trying to invalidate my entire sum of experience with mods over my entire life. Anyway, I've already looked through all the pages of the ship/weapon pack for any quips about balance. There are very few; barely any. Ships that were mentioned include names like Aurora, LC's Cathedral and Excelsior. Some people voiced concerns over the latter but such SPOOKY negative feedback was promptly (and unsurprisingly) denied.
For most mod authors, vanilla balance is a goal; whether it's met or not can vary - but there are a lot of mods where, if you use it and can identify a way in which the ships are over or under powered, the author will consider that to be valuable feedback and make adjustments.
As for the specific ships you listed... I'd just like to note that the Aurora is a
vanilla cruiser. If someone's claiming that a ship is overpowered for being as dangerous as an Aurora, well...
And, when you get down to it, that shines a lot of light on what tends to happen when someone wanders in saying "XYZ ship is OP, nerf plz!" - they base it on something like "Well, I can take this cruiser into the simulator, and have it beat down all three vanilla Dominators at once!"
Here's the thing: I can put together a 100% vanilla Aurora variant that can do that. I've even managed some variants that can sometimes pull that off under
autopilot. If I'm willing to accept taking hull damage along the way, I can put together a 100% vanilla Dominator variant that can do that. Being able to win that fight isn't (necessarily) an indicator of a balance problem. In fact, a heavy cruiser that -can't- win that fight is probably -underpowered-.