What is the difference between Mullvad Browser and LibreWolf?

At least in this one point I agree: I‘ve read the posts from @any1 and @anonymous477 on that multiple times, like these

and I did research, but I couldn‘t find any technical difference. LibreWolf has also strong fingerprinting protection. Couldn‘t it be possible, that MullvadBrowser and LibreWolf made for different purposes, but they ended up being pretty much the same (that comparisons between it are allowed)?