Eh, I've played Rage and I certainly wouldn't call it open world; more like a series of hubs and linear levels connected by corridors. That's a whole other topic though.
To tie back into resolution, both last gen console seemed pretty comfortable delivering (for the time) great visuals at 720p, but this gen I'd peg the sweet spot for the Switch at more like 900p rather than 1080. Even the base Xbox One seems to do its prettiest graphics at around 900p, with games like Battlefront 1 & 2, Ryse, and RDR2.
I do believe Skyrim did that to an extent as well. I mean you had the open world but going into cities, buildings or caverns took you out of that open world and had a load screen. There isn't a debate about that being an open world. Rage had an open world and areas you would enter that were essentially like a linear action game.
Switch is really a mixed bag of resolutions. If its a technically demanding game, its often doing 720p and sometimes lower for dynamic resolutions. But on average its certainly hitting resolution well above last gen.
Base X1 is generally hitting 900p is technically demanding games. But resolution isn't the whole story, Switch and X1 are doing vastly different visuals at equal resolutions.
Uncharted: Lost Legacy for PS4 (4/5) - EA UFC 3 for X1 (4/5) - Doom for X1 (4/5) - Titanfall 2 for X1 (4/5) - Super Mario 3D World for Wii U (4/5) - South Park: The Stick of Truth for X1 BC (4/5) - Call of Duty: WWII for X1 (4/5) -Wolfenstein II for X1 - (4/5) - Dead or Alive: Dimensions for 3DS (4/5) - Marvel vs Capcom: Infinite for X1 (3/5) - Halo Wars 2 for X1/PC (4/5) - Halo Wars: DE for X1 (4/5) - Tekken 7 for X1 (4/5) - Injustice 2 for X1 (4/5) - Yakuza 5 for PS3 (3/5) - Battlefield 1 (Campaign) for X1 (3/5) - Assassin's Creed: Syndicate for X1 (4/5) - Call of Duty: Infinite Warfare for X1 (4/5) - Call of Duty: MW Remastered for X1 (4/5) - Donkey Kong Country Returns for 3DS (4/5) - Forza Horizon 3 for X1 (5/5)