I am the human resources director at SONY in the United States. Of course, that I would be the person best qualified to answer you request for information on Nick Oshinski.
Mr. Oshinski received ratings ranging from 2.5 up to 9.6 with 10 being the top score. He must have done better reporting to some managers than to others. In addition, he took all vacation days. Although I did not know Mr. Oshinski personally, I don’t know if that applies in this case.
In summary, Nick Oshinski performed his takes well depending on who managed him.