Has a Chromium base which means a bunch of nice things: It just works better nowadays because devs make everything for Chrome and barely care for anything else. Chromium's native tab groups rock. Chromium means separate browser profiles and PWAs, which I like to have. I think Chromium's mobile UI is better.
Those are mostly just benefits of stock Chromium, but:
Sane defaults (eg. not defaulting to Google + search suggestions on). The browser has a built in uBO grade adblocker that also works on mobile and doesn't care about Manifest v3, like Mozilla, they run an independent end to end encrypted sync service for bookmarks/settings/history/etc. You get the good of Chromium without the bullshit.
Brave specifically: YouTube video background playback on mobile, they're working on vertical tabs, tons and tons of nice privacy features. I think being able to adjust video Autoplay is Brave-specific, but not sure.
Organization:
Mozilla as an organization is funded by Google, and is completely okay with others deciding what I should see on the Internet. It also just generally seems more interested in activism than browser building.
Brave from the get go tries to have independent sources of revenue (ie. their ad business, and now paid services like Brave Talk and adfree Search).
They are an organization that itself doesn't have politics except for user control and privacy, which is an increasingly rare attitude and I like a lot.
Brave maintains an independent search engine that has its own index rather than being a simple Bing frontend the way most other small engines are, and it supports DDGs !bang syntax. Plus Goggles are cool.
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In short, they don't do anything exactly revolutionary - they just focus on making a browser, and make a browser with very little bullshit.
It uses chromium and has a few other nuanced privacy features under the hood (for example it doesn't tell websites it's a brave browser, it tells them it's standard chromium)
Of course, telling websites that you're chrome while acting slightly differently than chrome is a surefire way of getting fingerprinted and identified as a brave user.
I know we like to complain that everyone uses the same web engine (and I agree it's not great, Google may not have killed off WebTorrent if it wasn't being used by YouTube competitors like BitChute) but web developers prioritize the chrome engine when beta/bug testing and it's faster than gecko.
Plus Mozilla really isn't the same as they used to be, they're too corrupt and political now
Greater web compatibility, and most features you need are built-in instead of third party plugins. With 1 click you have the ability to access or change a native: ad-blocker, https everywhere, script blocker, anti fingerprinter, cookie blocker.
And everything has an excellent UI for configuring things which can be done on a per site or global basis. So for instance just blocking 'x' script, or only blocking cross-site cookies, or whatever else. I believe Firefox was adding in some of these features back when I swapped, but they've been playing catch up for some time now.
There's also lots of other neat features like the topic of this thread, single click support for TOR, and I'm sure plenty of stuff I'm leaving out. I also find it to be vastly more performant/memory friendly if you're anything like me and happen to leave a gazillion tabs open because I'm totally going to eventually go read that really interesting sounding article that I opened 3 months ago.
