The auto enhance and auto white balance in RAW Power are combinations of two algorithms: one from Apple and one of my own devising. The Apple auto enhance includes the face balance technology. It works well, but has a downside. Apple provides no practical way for me to use it outside of auto enhance. That is why there is no equivalent “face balance” in the White Balance adjustment. So, it’s adjustment that only appears in auto enhance and is only controlled by the “face icon”.
Glad that you like using it for JPEGs too – as you have found, almost everything in the app is applicable to JPEGs as well as RAWs.