"If Germany had decided to build out nuclear"
This is misrepresenting what Germany did. They shut down their perfectly safe nuclear reactors with 20 to 30 years of remaining life instead of their filthy coal plants, all because of a deeply irrational and anti-intellectual fear of nuclear energy.
By what criteria can Germany's energy transition be considered a success? It has made german electricity some of the most expensive in the world while also emitting 10 times as much CO2/kwh as France. You are getting the worst of both worlds.