Beaker also supports regular web links - but Brave also supports Tor websites.
However, Beaker has its own extended web API and tooling. You can fork websites, edit them - and you can script this functionality. (For example, I have a wiki software in Beaker that will handle all the forking and editing behind the scenes - using Javascript to make it happen.)
You could say that Brave is a read-only HTML browser with wide support for decentralization protocols. While Beaker is a read-write HTML browser with its own protocol. And they both use the regular web as well.
I suppose right off the bat, Brave is a "normal" browser - so it just supports +1 protocol. That's really cool.