This is a new one... I'm shopping around for a new vacuum cleaner and Dyson boast on their website that their particular vacuums have x-number of "Air Watts" (even abbreviating it to AW). In the fine print it says "Suction tested to IEC62885-4 CL5.8 and CL5.9, tested at the flexible inlet, loaded to bin full, in Boost mode by independent third-party, SGS-IBR Laboratories US in 2022".
This smells of PMPO and other "made up" units of measure.
Edit: I stand corrected, it seems that there is some merit and standardisation to it. Looking at Wikipedia, the Air Watts article was created in 2008, so it seems it's not a new thing.