This article is remarkable because there is typically very limited accessible blogs about topics like this. This long article requires in-depth knowledge of a large number of microcontrollers, and the time, desire, and ability to verify, collate, and summarize all that information. That's a rare combination.
An ordinary journalist could not write this article. It would take hundreds or thousands of hours to gain the domain knowledge required to understand what needs to be written up and described - it demonstrates a deep understanding of topics like ISR latencies, peripheral compatibility, memory and instruction requirements, and other stuff that really matters to engineers but is typically beyond the reach of a casual reader. As a result, news in the field is very, very rarely unbiased, informative reviews - there are a lot of 'new product' press releases unsubtly promoted as 'articles'.
An embedded systems engineer at some company building a product using these microcontrollers would not write up this article. Not only is the comprehensive knowledge required uncommon even among skilled engineers, it would take dozens of non-billable hours and would make it easier for competitors. And we typically have very narrow domain expertise, so the ability to create a website and rich blog experience like this would be unusual. (The database issues the site had under load this morning are excused!) Open-source and information sharing are not commonplace within embedded systems development.
And you won't be able to easily generate this comparison yourself without a lot of work. You might think that the numbers described would be front-and-center on the first page of each datasheet for these microcontrollers. But you'd be wrong, or at least naive. Each manufacturer's marketing department exaggerates their numbers in slightly different ways, so the first page of the datasheet is inevitably worthless bull shit.