Regarding refresh rates and response time, gaming monitors, especially OLED ones, are still better than OLED TVs. You can get gaming monitors with refresh rates as high as 500Hz, while OLED TVs will top out at 144Hz. While 500Hz might be impractical, gaming monitors still offer much more flexibility regarding refresh rate options. On the contrary, if you're only interested in single-player, story-based games, you'll have a much more enjoyable experience on a large-screen OLED TV.