Not sure, but I am sure bean counters much smarter than I have looked at this stuff and made their decisions...
To me it seems common sense to cover more bases... sell your upscale premium lines in countries that have more disposable income, but also come out with some products for emerging markets. I mean, they do it with cars and every other product, so why not phones?
To someone's point, might have been yours, but they can keep selling the older models as their value line... but to me, I would perceive those as leftovers... As opposed to a new value phone of it's own entity, while it might not really be any better than the legacy iPhones... some might see it differently...
I guess like if there is a leftover car from 4 years ago on the lot versus a new model that might be a slightly lesser model... even though the leftover is technically a model a step up, in my mind, I still sorta see it as the car that's been sitting around for 4 years, as opposed to the other one that is at least "new"... If that makes any sense.
I realize it is more perception than reality, but to many the two are indistinguishable....