China also has 10x the population and 10x the steel production of peak "Arsenal of democracy" 1944 US war economy.
The manufacturing capabilities of China vs US is probably even less favorable than 1940s Germany or Japan vs US.
The US started mobilizing in 1940. Obviously not to full wartime economy, but we had the first ever peacetime draft and industry was gearing up to send weapons to Europe. Even still it didn't reach peak form until well into 1944.
Not to talk ill of him and but we went from DL being a strength of the team to something of a weak point under Washington both in recruiting and on the field.