How many times do I have to say it? The input and output devices matter more than whether something's emulated or not.
The crappy LCDs in the Switch are locked at 60hz, have poor response times, and of course playing real video games on them is going to blow. No real video game is ever going to feel right on a Switch. Even NEW games blow on the Switch. The input lag in Hollow Knight on the Switch compared to a real PC set up is well documented. Shitty Nintendo games are so slow and braindead they don't even require good response times. Going back to Super Mario World, Mario games have had like 4 frames of input lag even on real hardware on a CRT. Nintendo sucks.
You already covered how bad the shitty gamepads are.