>fastest laptop CPU in the world

Maybe, but it's 1) ARM 2) In a Mac. Those are some colossal caveats.

What caveats specifically?

I understand the problems of measuring cross-platform performance but anecdotally even on things that it's not specifically optimized for, for example running a Java Virtual Machine with 10s of GBs of memory, it's really fast, efficient and competitive to most non-Mac/ARM setups.