Well both of them make sense to me. Everything that is said on both analysis seems to be true.
Why does the head position matter, it the analysis is made taking into account points that are just there no matter the head position?
I understand that over positioning the diagrams would not work if the head position is different, but dont understand why each are not not valid separately.
You can say they both 'make sense' independently which they do independently. But you can't use them for an exact INTERdependent differential which is what you seem to be doing such as subtracting one angle from the other for a differential angle change. Last I checked the SN line relative to a horizont was 15 degrees away in one but 12 degrees away from the horizont in the other which could be a matter of the 'exact' head position was not consistent in both which by the way, is a common thing any time 2 different cephs are made.
There is also the factor of the doc being able to make adjustments when the SN line deviates MORE than 7 degrees away from a horizont which seems he did a good job at doing.
At this point, I really think you need to disclose to people you ask for feedback that your salient issue is that you are upset because you don't look like the yourself that you were USED TO seeing and you don't care that OTHER people (on here) who have seen these changes are like WOW impressed at the dramatic difference and ultimately you are just wanting validation that you 'should be' upset due to the doc 'doing you wrong'.
I mean there are people on this board, your's truly, is one such who can explain in terms of geometry or mechanics but that goes NO WHERE because ultimately your question resolves to an EMOTIONAL one of 'Why did he DO THIS TO ME?' So any analytical explanation is just going to elicit a BLOCK of 'Why did he do this to me?' and can become an exercise in futility for the mathematically or mechanically minded people to answer. Add to this that even when you show your pics the people who say 'Wow! That looks great.' are saying what you DON'T want to hear and that just ends up inflaming your emotions because you need them to understand how he 'did you wrong' by removing you too much from the 'identity' you 'identified' with even WHEN the change was one most people on here would be ELATED if they got. 10 to 1 if you showed your photos to CCW (who has asked for them on this thread) and also 'secondtimearound', the response would be WTF.
Just your question of
'Why does the head position matter?' is an irrational and emotional one resolving to the
'Why did he do this to me' meta program in your head. Reason being is that you already YOURSELF noted that the lines being askew were due to HEAD POSITION. So on a LOGICAL level, you KNOW why it matters. But the EMOTIONAL level elicits the irrational question of 'Why does the head position matter?
Now I understand you are emotionally upset due to 'identity issues' and I understand those things exist with some patients. I also understand that doctors KNOWN for kicking up the most dramatic changes in accordance to an aesthetic that a LOT of people specifically seek out those doctors for are the docs who, here and there, get the totally unhappy patient who's grounds for discontent is that they are upset being modeled in accordance to an 'aesthetic ideal' of the doctor and 'miss' the look they IDed with. But I think you need to clarify more to others you are seeking feedback from that this is the salient issue and not one of the doctor having poor judgement in terms of aesthetics.