As a Brit / non-United States American I have no idea who or what Gritty is and I’ve listened to the episode.
The best game with the worst graphics could well be those new Pokémon games too. They’re probably mechanically extremely sound in terms of the numbers game but they’re technically, and graphically bad enough for Nintendo to issue an apology. Given that Nintendo’s internal development teams are stone cold experts at maximising graphical potential and technical performance on the target hardware then it’s a Big Deal for them to issue that apology.