All I know is France and England had colonies in the Western Hemisphere at the time, Germany didn’t.
And he was brain-damaged as a side-effect from his very complicated birth, too.
Of course, in those days, the consequences of the brain-injuries he received during his birth were not clearly understood.
His crippled left arm was, after all, the more obvious, as well as the (then) better-understood, of his birth defects.
Still, I don’t believe the English gynecologist who assisted in his delivery was at fault. IIRC, he happened to be more of a medical theorist, rather than the practically competent doctor who would have been necessary for the job.