This information on spousal maintenance in AZ is available online:
In Arizona the support payments (if any) can certainly influence how the marital property distribution is awarded, which is why it can become a very intricate part of the final outcome of any divorce. Keeping this in mind, if you and your spouse are unable to reach and agreement on this issue, the Superior Court will order support from one spouse to the other on a case-by-case basis as follows:
The court will consider the following factors when making an appropriate maintenance award: 1. Lacks sufficient property, including property apportioned to the spouse, to provide for that spouse’s reasonable needs. 2. Is unable to be self-sufficient through appropriate employment or is the custodian of a child whose age or condition is such that the custodian should not be required to seek employment outside the home or lacks earning ability in the labor market adequate to be self-sufficient. 3. Contributed to the educational opportunities of the other spouse. 4. Had a marriage of long duration and is of an age that may preclude the possibility of gaining employment adequate to be self-sufficient.
Without regard to marital misconduct, and after considering all relevant factors, including: 1. The standard of living established during the marriage. 2. The length of the marriage. 3. The age, employment history, earning ability and physical and emotional condition of the spouse seeking maintenance. 4. The ability of the spouse from whom maintenance is sought to meet that spouse’s needs while meeting those of the spouse seeking maintenance. 5. The comparative financial resources of the spouses, including their comparative earning abilities in the labor market. 6. The contribution of the spouse seeking maintenance to the earning ability of the other spouse. 7. The extent to which the spouse seeking maintenance has reduced that spouse’s income or career opportunities for the benefit of the other spouse. 8. The ability of both parties after the dissolution to contribute to the future educational costs of their mutual children. 9. The financial resources of the party seeking maintenance, including marital property apportioned to that spouse, and that spouse’s ability to meet that spouse’s own needs independently. 10. The time necessary to acquire sufficient education or training to enable the party seeking maintenance to find appropriate employment and whether such education or training is readily available. 11. Excessive or abnormal expenditures, destruction, concealment or fraudulent disposition of community, joint tenancy and other property held in common. 12. The cost for the spouse who is seeking maintenance to obtain health insurance and the reduction in the cost of health insurance for the spouse from whom maintenance is sought if the spouse from whom maintenance is sought is able to convert family health insurance to employee health insurance after the marriage is dissolved. 13. All actual damages and judgments from conduct that results in criminal conviction of either spouse in which the other spouse or child was the victim. (Arizona Statutes - Title 25 - Chapters: 319, 322)
Arizona is a community property state, meaning property acquired during the marriage is marital property unless it fits the definition of "separate property" 25-213.
What I note here is a marriage of medium duration and the disparity in income. I don't think the "missed promotion" argument will carry any weight.