The ps3 provides decent ui but due to stunted interest in the ps3 for homebrew there hasn’t been as much of a focus on getting emulators running well, just to get them running, so while 2d systems will run well at native res you won’t be able to push them very far with shaders, and while n64 allegedly works decently you’ll be stuck with buggy and slow performance. The real upside to the ps3 is decent ps1 and ps2 emulation because of Sonys efforts (even on non-bc consoles) which opens the door to thousands more games.