Compare the states of New York and New Jersey to the country of Italy. That is a more fair comparison. Not USA -> Italy.
One more thing. Italy didn't beat it. As soon as free movement is restored to the EU, it will spread again. The only thing that would prevent that is the ballyhooed theory that there is latent immunity in 40-60% of the population. If that is the case, than yes Lombardy is in the clear.
But if that is the case, then we also ruined the economy over a disease that was only going to infect a quarter of the people feared, and kill even less. Changes the math, doesn't it?
Edit: Fixed my stupidity about regions of my own country.