I dont want to derail this thread much further especially since we have had this exact same argument before but in the 80s-early 00s staggered launches over the course of 1-2 years were common and starting in the 7th gen global or semi-global launches have become the norm, all I'm saying is that this change is something that needs to be considered when making launch aligned comparisons.
Like you said, different times so why does it make sense to compare it as if nothing has changed in the last 20 years.
And I am saying when comparing launched from different times... you compare whatever detail they both share in common. And in this case that is the amount f units shipped. Plans change, times change... those are all subjective. What we can measure however is manufacturing capacity.