I made a comparison to the Gothic Wars a few months back, personally I agree with you.I wonder if Central Italy after the Gothic Wars of the mid-6th Century could be considered a comparable description for post-WWII Europe of this reality:
Europe would be done in this world. They may economically recover to 2nd world levels, but they’ll be culturally numb - from the leaders of the world to total self-destruction in 60 years.