I don't think you can go wrong with either. But I love that I can swap my ports around on my framework laptop. Especially after my display port got broken last year (cable got snagged). Instead of it being damaged until I replaced the laptop, I ordered a new module for $20.
Eta: I'd love to see a partnership between them in the future.
I used to run debian testing, but as the branch name implies you will experience the occasional break. If you're doing straight gaming, Arch seems like the distro to be on. I game and work (dev stuff) on my machines so I run pop_os (with xanmod kernel).