I was told later it was a salary match to another offer, but not at all what the person was making in their previous job.

What evidence do you have that this is not true? What evidence could you show the EEOC that his compensation package is directly tied to your medical condition?

It is an unfortunate but true fact of corporate life that often new hires come in at higher compensation packages than existing employees, sometimes even their own managers, due to changes in market conditions.