User suggestions about better articles tend to be pretty reliable, so we tend to trust them. Sometimes they turn out not to be better (at least not by consensus)βin which case we can change the link back. I've done so in this case.
If you want to understand this process, you should understand that none of it involves actually reading the articles!
I would argue the Phonorix is the vastly superior link.
That blog is the most dedicated to the confluence of 3D, Linux, and open source.
The Nvidia copy is typical engineering marketing copy. The Phonorix post dives into everything with great detail and goes further by discussing the future of open source Nvidia support with the upcoming technologies, and existing technologies (Noveau, Mesa, etc)
Nvidia fanboys care little for Phonorix because that site consistently points out how unfriendly and uncooperative Nvidia has been with the whole of the Linux community. (Web search for yourself Nvidia EGLStreams GBM.)
I don't even dislike Phoronix, but what was wrong with the first-party source?