I'm not sure about this. I think Samsung is doing well because they have great products for fair prices, but I'm continually let down by their marketing. They could take a page from Apple in this dept.
Example: Their Smart TV can be controlled with your hand in the air! I've been dreaming of this since I was 5 back in the 80's and when I saw the commercial they put out the only thing I could think was 'meh'. Even when Apple does something incremental like the iPhone 5 their marketing still leaves you with a sense of awe.
To be fair, their smart tv's motion controls were pretty tetchy when I tried to use it (at a Best Buy, so clearly not the intended scenario, but at least a foreseeable one).
This describes my thoughts on all Samsung phones... littered with half-working, buggy features that would not be put into production at any other company who's primary goal isn't to check off a slew of features.
There's a common refrain below the fold on tech websites that people who use Apple products, or even like them, have been brain washed by a mass marketing campaign and that's the only reason why. 'Sheeple', 'iSheep' etc are often thrown about. Mac fanboys don't get a reprieve on that, but in general there's a theme that Apple only does well because of marketing.
I think Samsung is doing phenomenally well because of marketing and getting the telecoms to push their phones hard (financial incentive?)