Probably this:
http://www.gsmarena.com/samsung-phones-f-9-10.php (make sure you also go through all the pages
) may have something to do with it.
Apple releases only one phone (or as was the case the past 2 years, a whopping TWO) each year. Samsung sells hundreds of different models at every price point from almost free to premium. It's not a surprise that the combined sales of all of these handsets would surpass that of only one phone.
What is a surprise is how the gap ain't larger than it is, considering that. Quite an achievement by Apple I'd say that they can hold their own and sell record breaking numbers every year, despite the deluge of handsets released every week from their competitors.
Compare Android to iOS and the same logic applies as well, with one phone competing against thousands of other handsets by a multitude of OEMs, each churning out dozens or more models at every price point from cheap to premium, and yet 2 out of every 10 phones sold globally is still an iPhone. And it is still, by a wide margin, the best selling smartphone every single year. Period.
I don't know how that could be seen as a negative for Apple. I'd say they've done very well sales-wise.
But keep posting that spreadsheet a few more times if it somehow means anything.