What a rude way to make a point. Maybe you meant something like "Interestingly, the same approach would be perceived differently in Germany I think, and would perhaps come off as egotistical"
Maybe you would be better served by a less confrontational way of making your own point, perhaps something like "I think your otherwise valid point would be made more effectively if it were couched in less emotionally abrasive language, such as
'I think the same approach would be perceived differently in Germany, perhaps coming off as egotistical.'"
