If the wage level is changed (up to level 4), you may need to do the PW research process again in some cases (if not researched).
In other words, in the same wage level, higher salary doesn’t matter (and is good for the process).
Here are PW data per job/area (just average data, not the ones used in the process actually).
https://www.flcdatacenter.com/OesWizardStart.aspx