I think they say that because it used to be only supercomputers that could do a petaflop of compute. So taking what used to be a datacenter(15 years ago) and cramming it into a small device is a pretty impressive feat.
The Raspberry Pi Pico I carry on my keychain is significantly more powerful than the Apollo lander computer, but thankfully they don't advertise it as a "Lunar Computer".
Just marketing nonsense. In the same keynote Jensen called it an “AI supercomputer” and “cloud computing platform”. Might as well add “quantum blockchain computer” while you are at it.
An ARM NUC running Nvidia customized Linux
you know they only use the smartest silicon in the production line