Unfortunately, submitting a petition request for rehabilitation and pardon is not the same as getting either request granted. As my colleagues have said, such grants are rare, particularly for a full pardon. The best approach, although expensive, is to continue to seek relief while also continuing efforts to have accomplishments that will convince the court and the Governor that rehabilitation has been achieved and a pardon is warranted.
Although I am an experienced CA criminal defense and appeals attorney, I can not 'guarantee' that my answer is entirely accurate, since I have not reviewed all of the factual circumstances of the case, nor have I discussed those circumstances fully with the questioner. The fact that I have answered this question does not establish an attorney client relationship between the questioner and my self or my office.