You mean the standard TDP is made up ?

Yes. "TDP" from Intel and AMD have completely different definitions and are only loosely correlated with actual power consumption (especially for mobile parts); they're pretty much made up by the marketing departments for the purpose of product segmentation. The "TDP" they list for Apple is made up by PassMark; Apple doesn't publish a TDP number.

Good point! Here are some numbers at peak load, check Cinebench R15 multicore wattage and score : https://www.notebookcheck.net/M1-vs-R7-5800U_12937_12976.247...

No mention of methodology there. In the review of the M1, it looks like they reported some numbers from software estimates (never particularly accurate, especially for cross-platform comparisons), and some measurements of wall power (ignoring the battery, which actually matters for peak power consumption). The one AMD 5800U review I checked seemed to be mostly using wall power measurements. Their methodology article does not really provide any further detail ( https://www.notebookcheck.net/Our-Test-Criteria.15394.0.html ). Every plausible way of producing the numbers in the comparison chart from the data they collect and present in their individual laptop reviews leaves them at risk of systematic errors on the order of several Watts.