Quote Originally Posted by Kappy
I believe Cloud told Hojo he was experimented on, which lead Hojo to believe he was one of his failed Sephiroth clone experiments. Hojo continuingly refers to him as a failed experiment; whereas in fact he is not.
Of course he is. A 'Sephiroth clone' just has some Jenova cells in them, like Sephiroth did. That's what happened to Cloud and Zack, and if Zack had lived he would have been drawn to the Reunion just like everyone else.