First of all NO.
Your comparison to a pre master and a post master will be most flawed. A mix has nothing to do with the post mastering using the meters.
In otherwords, what you buy and what you hear in post production has little issue to what you do in the mix. Their are two different realums.
One realum is Original mix. Professional format. Not consumer frendly.
In your post in the other forum , I have other answers.
As far as a book, stick around here and practice and you will gain knowledge to become great at this art..I know you will.
Next realum is mastered works. Consumer friendly.
Your mix is not meant to be right for consumers, rather ready for a mastering engineer to take over and do corrections to put the master in consumer friendly territory.
Remember, it takes years to be at your top in mastering alone.
Two different realums.