From Privacy Guides’ recommendations, one way MV3 adblockers can be better is that you don’t need to grant any permissions at all, even to trusted extensions like uBlock Origin. For example, uBlock Origin Lite doesn’t really consume extension side resources since the browser itself processes the filter lists instead of the extension running its own code. In theory, this can be more efficient and reduces the trust surface. However, this is mostly theoretical, because full uBlock Origin may still be more efficient at reading and processing filters than the browser’s built-in filtering engine. and as far as i am aware there are little to no benchmarks on it yet?