Yeah I stripped out "necessary" industry from the number. All the industry you're paying is hull+extras beyond what is needed to build a floating coffin with warp drive/sublight but no weapons.
Defense is generally correlated with mass, but maneuverability factors in to the final number.
So, huh, this little dude is just +33% the cost of a Stingray, but has twice the firepower, another 7c cruise speed, and is still on aggregate just as survivable because it'll only actually get hit once in a blue moon due to its insane agility, and is likely to survive at least a couple mistakes.
Yeah, this design is likely going to perform
very well. If the Stingrays were already capable of matching a Warbird in mobility, and these are significantly higher than that.
Despite how tight the tolerances too, it's
not actually a space coffin, at least not any more than a Stingray is. It's half the mass, just as survivable, and honestly, looking at the design.
Is this thing actually capable of being planet-based? The design looks like it could very easily settle down with the right landing pad, which would give it a valuable postwar role as a system defense boat that you don't need to lug a starbase around to base from.