Brave's browser claims a speedup over AdBlock plus, but was inspired by UBO, so the performance is fairly similar, but is baked into the browser instead of being an extension.
> We therefore rebuilt our ad-blocker taking inspiration from uBlock Origin and Ghostery’s ad-blocker approach.
Jesus, why does everyone these days automatically assumes that everyone else is using Chrome or Chromium? It's almost as crazy as calling Windows a "PC".
Also just so you know, Brave isn't "written" in Rust alone, it is a big software with a lot of parts, including but not limited to a rendering engine, a JS VM and a WASM engine.
The Rust part at most (unconfirmed) would be the glue that connects them together, and I doubt that's where the bottleneck is for most browsers.
>The new algorithm with optimised set of rules is 69x faster on average than the current engine.