Quoted By:
I will say this: the Switch is doing some excellent interpolation when composing the final image. It would be very easy to misinterpret some of the more obvious lines and hard edges and conclude the game is 720p native when docked, 540p handheld.
But if you look closer, the actual 3D geometry only has 'new' features at a rate that indicates the engine renders 3D at 480p when docked. (13 steps in pic related, 13/30*1080=468)