On Linux - Chromium vs Firefox - X11 security

I just checked if browsers on Fedora and on Ubuntu use x11 or wayland using xwininfo. Firefox uses Wayland while Brave and Vivaldi use X11.
I read Madaidan’s Insecurities and he states that Chromium browsers have better security than Firefox browsers on Linux. Ok.
So which is more secure then? Using a chromium browser with X11 or using Firefox with wayland?
This is really confusing.

Chromium. Its quite easy to switch Chromium to Wayland: Chromium - ArchWiki

3 Likes