Germany's Starfighters
I am old enough to remember the hoo-har about German F104 losses.
As I recall, the reason given at the time for these losses was that the Luftwaffe wanted the aircraft to be capable of a wider range of roles than those for which it was designed. (I don't recall what these were). As a result, a good deal of additional equipment was stuffed into it, making it heavier than its American counterpart and a bu**er to fly.
That's my recollection anyway.
Broomstick.