The cultural differences. But, we could already guess this intuitively.
To German team members, this kind of American praise often feels exaggerated, inflationary, or simply unwarranted. The Germans fear a creeping self-delusion. Germans simply don’t use terms like “great”, “fabulous”, “fantastic”, “amazing”. At the same time, German team members receiving feedback from Americans often fail to recognize the criticism that may be carefully wrapped in praise. Even though the American managers feel they have been quite clear, the Germans are often not sure what their weaknesses are and how to improve.