As it turns out, Apple does release the fineprint, but that makes comparisons clearly weak. But the key is that it depends on your reference.
For example, it promised, on many occasions, “up to 5x” better CPU performance or “up to 3x” better GPU performance. We only saw glimpses through Apple-tinted glasses and animations. Built on a 5nm process, with 16B transistors (up 35% from the A14), 8-core CPU (four performance cores, four high-efficiency cores), up to 8-core GPU, and a 16-core neural engine. Finally, we saw some limited detail into the first Apple silicon system-on-a-chip (SoC) for Macs.