Unless it has changed, the meat in the McDonalds restaurants in Germany is not the same as used in the McDonalds restaurants in the U.S. Back in 1985 I went to a McDs in Wurzburg to get an 'american hamburger' and was surprised to find out that it didn't taste the same because the meat supplied was Germany of course.
BTW, my favorite food is German cuisine! We have some good places here where almost everything is imported from Germany. I once went to a place that had German cuisine, but couldn't get past the grilled bratwurst.
On McDs, I've had a quarter pounder in three different countries, and they were all equally weak. McDs, Burger King, they're all sissy-burgers.
If you want a GOOD burger, go to Red Robin or Ruby Tuesday's.