For all the other claims on GPU performance, they call out that they are comparing to the integrated graphics, and they name the GPU specifically. With this one claim, they name a computer, but not the GPU. "Compared to a computer that has a laptop 3080 in it" is not the same thing as "compared to a 3080."

And they don't define "performance". Is it fill rate? Is it TFLOPs? Is it memory bandwidth? The M1 Max has 64 GPU cores. That sounds like a lot! It's not! The NVidia Laptop 3080 has 6,144 cores. That's NINETY SIX TIMES as many cores. I'm sorry, but supposedly achieving 90% of the "performance" of a GPU that has 2 orders of magnitude more cores is just not in the realm of believable. They are being intentionally evasive here.