User blog comment:WillTurner101/Will's Fate/@comment-996391-20120317095919/@comment-1984959-20120321050206

Well, I just say it was, as Tia Dalma put it, a "touch of destiny" or, as it was put in a deleted scene, "Fate". So I doubt there would've been another way(especially at this point; as it was already filmed lol).

I wouldn't believe that Jack would stab the heart, especially with being in the position that a man he was so acquainted with dying in front of him. Although if Will wasn't stabbed by Davy Jones, I think Jack would've stabbed the heart(as it was because of Will dying that Jack gave the burden to Will).