These articles are the worst type of tripe - anyone calling Google or Samsung's 2013 as failures instantly loses all credibility, as much as those who talk about Apple's demise. You should be able to talk objectively about performance without turning into a circle jerk.
Google's core business is obviously doing tremendously and their ability to monetize their users through advertising is ridiculous (2 to 3X times anyone else). Their Android strategy does seem haphazard at the moment, though they seem content enough to cast the widest net they can, even if it's on low end devices.
Samsung had a tremendously profitable year, closing the gap in profits to Apple in a way that was unfathomable 2 years ago. The S4 was a disappointment, though the Note 3 was excellent. The Q1 2014 release of the S5 along with a slew of new tablets should provide some guidance on how they will execute next year. They get about a half year of sole attention until the next major update to an iOS device.
Apple was Apple in that they innovated and executed tremendously in 2013 in their existing product segments. The biggest what if of 2013 is their lack of a larger screen device. Regardless of whether *you* want one, there clearly is enormous demand for a device and it's fair to think how much money they left on the table. They're in good shape, though it's unfortunate there isn't going to be much new in iOS until the summer.
<edit> The one ongoing concern with Apple is that their profit shrunk y/o/y compared to 2012 which is never a good thing, though it's balanced out by how ridiculous their profits still are. Still - Apple, like every other company out there wants to grow profit y/o/y and it's to be seen whether Apple get fix this in 2014.