First, to answer your question, I use sundaras for gaming and I think they work pretty well, but imaging leaves a bit to be desired depending on the game.

Headphones for gaming is a strange world. I work in audio and have a few friends who work in the video game industry doing sound design/implementation, so I have a bit of a window into that world. Most games seem to be "mixed" (programmed really, but similar enough process) using either stereo speakers and/or whatever headphones the people working on the sound engine use. This is fairly commonly gaming headsets like astros, less commonly hifi headphones (which makes sense as the majority of gamers will be using gaming headphones, so you want the mix to sound best on what most people will be using). I don't know for sure this is the case at all major studios, but at least 2 of the big ones I can say for sure this is the case.

Because all headphones image differently you can't really make a game work perfectly on all of them. I generally got pretty fantastic imaging back when I gamed with Astros, but hated the sound, now I love the sound i get from my sundaras, but the imaging can be a bit off, particularly with sounds that are supposed to come from behind me (using in engine 3d/surround/atmos emulators). I prefer better sound quality to imaging, though if I was trying to be more competitive in pvp situations I might look for a different pair of headphones or iems that image better with specific games.

So basically no one headphone or driver type will be best for all games, and it's ultimately down to what you like best and what compromises you prefer. Ideally we'd all play on surround or Atmos speakers for the best experience, but very few actually do.