On servers I prefer Debian, but my experience on Debian hasn't been as smooth as Ubuntu for gaming, even when activating Debian nonfree repositories with proprietary NVIDIA drivers. I've had some trouble with the Wayland transition, but now everything works fine.
Also, the Steam client is officially supported only on Ubuntu. Probably SteamOS too, implicitly.
On servers I prefer Debian, but my experience on Debian hasn't been as smooth as Ubuntu for gaming, even when activating Debian nonfree repositories with proprietary NVIDIA drivers. I've had some trouble with the Wayland transition, but now everything works fine.
Also, the Steam client is officially supported only on Ubuntu. Probably SteamOS too, implicitly.