Funny. Why don't test Ff and Brave yourself?
There:
https://browseraudit.com
https://coveryourtracks.eff.org
https://www.deviceinfo.me
https://browserleaks.com
...
Brave browser is, by default, better than Ff for privacy protection including fingerprint resistance...
With Ff there is a lot of job to reach the same level. This for example:
Firefox Hardening Guide 2024
https://brainfucksec.github.io/firefox-hardening-guide-2024
Have a nice day