An authorization to prosecute is not the same as an initiation. The law requires an initiation by the foreign head of state and an authorization of the German f

An authorization to prosecute is not the same as an initiation. The law requires an initiation by the foreign head of state and an authorization of the German federal government. But that's semantics anyway. You should rather ask yourself, why should this law be treated any differently than all the others? It's written into it but that's the best reason one could find.