I always was and will be team SUSE, no matter what. With other distros I had bad experiences at some point. Never with SLES or OpenSUSE. Although, currently I have no OpenSUSE installation, as it is not suitable for gaming.
Oh, as with any Linux, all of them are for everything suitable if you have the time to modify everything. I‘d rather use a Linux which is optimized for gaming, e.g. uses Zen kernel, ProtonPlus, Steam with gamescope and gamemode, HDR enabled by default due to the correct DisplayPort drivers, and many other things.
In terms of frames per second, it is probably only slightly better than an unoptimized OpenSUSE
Zen Kernel is the opposite of "optimized for gaming".
It was once the default kernel for out-of-the-box gaming simply because it had fsync patches integrated. But since fsync is in the normal kernel for quite some time now zen is obsolete for that purpose.
I mean it's still an okay choice for any desktop environment but it is definitely not optimized for gaming as it sacrifices throughput and is more tailored to multitasking of a lot of smaller things running to provide a snappy desktop experience.