Is that what they're claiming here? It looks like they're just saying that the hardware is capable of it, and that it will beat human driving at some point in the future.
"All Tesla vehicles produced in our factory, including Model 3, have the hardware needed for full self-driving capability at a safety level substantially greater than that of a human driver."
"Have the hardware needed". Note: not the capability; just the hardware. It's an unnatural way to write promo copy for a feature, and is written that way for a reason.