Was the US economy after WW2 stronger than in December 1941?
No, it was not.
My parents told me about constant shortages of various consumer goods which lasted into the early 50's. There was also quite a bit of unemployment as 12 million people came out of the military forces and back into the civilian job market.
It took a while to adjust. Things changed in the mid-50's and America had a roaring economic boom going by then. Good times kept coming until the early 70's.
Russia will probably recover slowly from their wartime expenditures once the Ukraine has been conquered. It is unlikely that victory will be worth what they are paying for it. And China is likely to take a huge chunk out of their backsides to the east if they are not careful.
Russia is bashing their way through Ukraine by spending men at a greater rate than the Ukraine can match. China may be able to do the same to Russia when it comes time for them to take the eastern provinces.
You mean America untouched and with a manufacturing powerhouse at full production surrounded by a world that was destroyed with the destruction focused on destroying all of the competition’s manufacturing ability and supply lines, and leaving them desperate for what we could sell them?
Do you think that is where Russia will find itself when the results are in on their Ukraine invasion?
Actually, yes it was, despite a brief but sharp recession in 1946 when U.S. industries reverted back to peacetime manufacturing and 16 million servicemen returned home to resume their civilian lives.