Assuming you are German, then: The US liberated your country from fascism, saved half of your country from 50 years of soviet occupation, rebuilt your country with the Marshall Plan after your country started two world wars that killed 100 million people, and now defends your country from genocidal russian aggression because your country is too cheap/lazy to meet your NATO defence spending obligations.
If you can trust the US to defend you from Putin, you can trust the US to handle your data. China doesn't have that relationship with Germany as far as i'm aware