It's evident you already have an impression of Brazillians so why debate. I can say the same thing about other cultures from my own experience, but it may not ring true with others. It really won't matter what anyone says, it probably won't change your opinion. You'll have to experience something dramatic hopefully in a positive way before you re-program your mind.
I for one respect the German machine. In fact I own a Hugo Boss suit, shirt, and ties. I use German hair care product; Schwarzkopf. Parent owned a BMW. Germans are about efficiency, but in that pursuit of perfection lies a singular mind state which alienated itself from the rest of the world at one point. Your nation was divided til the dissolution of communism. Point is if you want to talk about race every culture has their strengths and weaknesses throughout the dawn of time. You know your own history dating back to the Nordic Bronze Age with the Germanic tribes, Roman Empire, German Confederation, NP, the Wall, and finally reunification. I don't think I need to expand on this. You can't single handedly point out that group A is such and such therefore they all fall into that category. If that were the case then imagine what the world would say about Deutschland.
The fact that you base your opinion on one remark from a certain group shows a parochial vision would you not agree.
I'm going to end this by posting a funny jpeg from a board member who posted it not too long ago.
Take it for what it is...
Marcus Aurelius: Tell me again, Maximus, why are we here?
Maximus: For the glory of the Empire, sire.
Baked, not fried... the healthy choice.