score:3
Well functioning societies usually turn the page when they realize that they did something wrong or that their enemies did; they bury the hatchet and look towards the future instead. In this spirit, part of ending a war usually involves a large degree of forgiveness of the general population and most or all of its leaders.
What more, (West) Germany has been a vibrant democracy with a deep attachment to human rights since WW2, and a notoriously tolerant one at that. (In case searching for counter-examples of hate groups or human rights abuses crosses your mind, yes it's not perfect but keep context in mind: several US states had racial segregation enshrined in law until the 60s.) For all of Germany's flaws in welcoming immigrants and refugees, other countries have plenty of good lessons to learn from what it's been doing since WW2, and Germany is (IMO) thus entitled to some clout.