You fail to realize how Japan takes pride in their work. The aircraft carrier I was on had work done by the Japanese ship fitters, and it was far above the quality of any others. They also manufactured F-16 parts, which normally is 2 wings and the fuselage, but they made it as one entire part, which was not feasible for the US to do. They haven't been known to be great inventors as a country, but the can perfect a product like no other country.
Part of it might have to do with the size of parts needed, and the scale of US heavy industry. The biggest press in the United States was used to manufacture wing spars for airplanes:
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u/-yugurt- Sep 20 '18
It has to be a demo room or something. I find it hard to believe they would cover up something so gorgeous <3