Author seems to be basing this from their results of https://browserbench.org/Speedometer2.0/ :
* M1 - Chrome on macOS: 127
* M1 - Chrome on Linux via QEMU: 160
I just ran the benchmark on my framework laptop (2021 version - 11th Gen Intel® Core™ i7-1185G7)
* Framework - Chrome on Windows 11: 138
* Framework - Chrome on Linux (manjaro): 160