They claim an 8-38% improvement over vanilla Chrome. It is not a completely de-Googled browser, but their focus has been on improving performance as well as a number of patches to restrict what is passed back to Google and generally improve security and privacy.
I know Firefox (and Tor and derivatives) do achieve the latter, but they mostly do not achieve the fastest performance, and sometimes websites don’t work well for them (not Firefox’s fault, but the website devs who are not designing to be compatible with open web standards).
They have also created a number of their own Chrome extensions, which seem quite unique.
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