Take a look at the very first image right at the top of the article.

I never saw them mixing up the GPU and CPU cores. They have 4 CPU cores and they kept on saying it.

Well, 5 cpu cores, one is invisible to the OS though.

The number of cores is not "drivel", and it's also not new. This kind of information is absolutely standard fare when talking about GPUs nowadays.

See for instance the (huge) tables at http://en.wikipedia.org/wiki/Comparison_of_Nvidia_graphics_p..., under the "Config core" column you can see each model's configuration of cores.

You can see that the idea that a GPU has several types of core, and various amount of each, goes back 5+ years.

I don't think they ever claimed or even misled people into thinking those are 72 CPU cores - even at the event. I think pretty much everyone knows they're talking about GPU cores, and not just to say that "we have more GPU cores than you do", but to compare to their previous "12 GPU core Tegra 3". Besides, they were talking about the 4 Cortex A15 cores all the time.