To be specific: 720p and severely degraded effects, textures, models, anti-aliasing, etc - and you'll be lucky to get 60fps.
The Switch has about as much horsepower as a ~6 year old mid-tier Android phone.
For example: Immortals Fenyx Rising is cross platform, but it feels smooth. I would rather play on Switch than other consoles so I can occasionally play while traveling. It’s really nice to have the same game, same save point, with same controller on the TV or on the go.
As a user, however, the switch is by far my favorite console. It might not look as flashy but I can play almost any game I want anywhere I want.