Nobody should use Brave, honestly. The number of fingerprints Brave doesn’t cover is too high, especially after they removed Strict fingerprinting protection. Comparing this to Mullvad should be ragebait.
Without using a VPN, Mullvad Browser provides the same protections against naive fingerprinting scripts as other private browsers like Firefox+Arkenfox or Brave.
Browser recommendations definitely should be rephrased to avoid being misleading. Mullvad has more fingerprinting protections, Arkenfox has fewer, and Brave has even fewer. They’re all different.