The series comprised of 2 tests and ended at 1-1, end of...
The Eden Gardens test which Pakistan won was part of ATC and not the bilateral test series both countries played for. Both of them shared the trophy after drawing it which won't have been the case had Pakistan won the series 2-1 as you allude it to be!
Its you who are rewording the series by making it a 3-tests affair. Certainly another way of looking things....