linux mint - brave installation

I'm testing currently Linux Mint to switch later from windows to linux as main os.

I just installed the brave browser with "curl -fsS https://dl.brave.com/install.sh | sh" directly from brave itself (webseite).
In the app-store the brave shows as "brave-browser" as a "system package". But I figured out, there is another flatpack version called "Brave".

Why are there now two, and which is the correct one? How do I "trust" if I install packages?
My goal is to swtich my os and also use the terminal as a lot as possible.

https://preview.redd.it/s7kmgvqix3zf1.png?width=274&format=png&auto=webp&s=bda39fe14935b81fb521eec3e5580ff46a20aca8