[lolinder]

That can get you 95th percentile calculations for brand new computers that you bought from the store in 2023 that are running Firefox alone, but that doesn't help you understand what your performance will look like when you're running on a 10-year-old machine running Windows 7 while the user is also running Microsoft Word, Excel, and Outlook at the same time. Your P95 numbers aren't especially meaningful if you've only tested ~10 different PC configurations.