Apple had been sandbagging the Intel chips for several generations of macbook with anemic cooling solutions, poor thermal throttling curves, and fans that wait until the last moment to turn on. To the extent that the fastest CPUs available in Macbook Pros did not outperform lower models, because both became thermally saturated. When properly cooled, the Intel silicon tends to perform a lot better.

Additionally, both Intel and AMD manufacturer CPUs for HEDT and servers which are far beyond anything Apple is fabricating at the moment. Apple has no response to Epyc, Threadripper, or higher end Xeon. Similarly, Apple has no equivalent to Intel, AMD, and Nvidia discrete GPUs.

Apple made a quality cell phone chip, and managed to exploit chiplets and chip-to-chip interconnects to double and quadruple it into a decent APU. But it's still an APU, just one segment addressed by current x86 designs.