They do have less panel gaps and other minor flaws, because the people putting them together in Germany actually care (and have unions and proper working hours so they're not exhausted).
I am not sure how much unions are present in German Tesla factories. They are certainly very present in every other German car factory. Tesla does not accept unions. In Sweden, which is unionized to a higher degree than Germany, Tesla's service (no factory there) is in continuous labor conflict with Tesla who thinks they can act as irresponsibly as their owner.
