The war that killed like, 1/3 of Germany's population? Including 1/2 of the total male population? The war whose damage was not surpassed until 1945?I don’t think there’s any situation where Germany isn’t completely ruined. When the economy blows up it’s going to cause wide spread banditry and famine. Compounded with the wars that will come it’ll probably do as much damage as the OTL 30 years war.
I doubt the damage will be anywhere near that severe.