No it isn't, but you already knew that. Not in the least. Samsung has better economies of scale, logistics, and marketing budget than SONY. What they do not have are better designers and product developers. They've exploited their advantages but, from an economist's perspective, have expanded too far and too fast. Now costs are catching up with them. Whereas virtually every other OEM has an ODM they can call upon to increase or decrease orders, Samsung relies on itself. That can be great when orders are up but devastating when they're down.
Again, Apple makes only a few products and they do a very good job. They also market them well and keep costs in line. Samsung is the polar opposite.
You want to paint a picture that it's hopeless for Samsung. Unfortunately that's not reality.
Devastating is a matter of perspective - maybe compared to Apple, Samsung's estimated Q4 4.7 billion in quarterly profit is poor, but compared to other OEMs bleeding money and looking to sell off their mobile divisions, it's night and day.
The Note 4 is a much better device than you want to give it credit for. Thankfully very few share your opinion and it's a device that can stand on its own merits against Apple's best.
Samsung is responding intelligently to their slowdown and what were weaknesses a year ago are turning into strengths. If Samsung really goes with mostly the Exynos 7420 for the S6, that'll be a great win for them, especially if it ends up truly being a superior SOC to the S810. Their memory group is killing it. The displays are class leading. Their build quality is massively improving. Their software is finally getting there.
It's been a tough year and again, they're never going to get their mobile division back to 2013, but I predict a reversal of the sales declines of 2014 and actually moderate growth in 2015.