This is what it could look like.
What you see here is Control running on my RTX 2060 laptop at 720p using DLSS Balanced (which is just 410p). However, to simulate theoretical Switch Pro performance, I downclocked the hell out of this thing. It is basically just a former shadow of itself now! At 375 MHz, the theoretical raw output of my 2060 is now around 1.4 TFLOPs which is absolutely in the realm of possibility for an actively cooled handheld, especially when using more efficient 8nm or 5nm process node. Of course, memory bandwidth is also heavily downclocked to a sad 810 MHz, which puts it around 150 GB/s. Admittedly that does seem a bit much, the real Switch Pro would likely have around 100 GB/s or less. Still it is pretty close to that and we have to remember with the real Switch Pro, they should be able to get more juice out as it's a closed system so developers can work closer to the metal here and the possibility the system could use the Ampere architecture which allows DLSS to run concurrently to RT+Shading to get a few more frames, as well as using lower RT settings than on PC for saving further rendertime similar to Xbox and PS5.
I think this experiment shows nicely that demanding RT like Control in a handheld when leveraging RT and tensor cores is not only possible but also more than playable and enjoyable. Nintendo could actually be the first to deliver this demanding state of the art tech (talking about real time RT in games of course) to the mobile sector. Let that sink in for a moment. Now you're playing with power!
Not to mention that with Raytracing, Nintendo being Nintendo, they would use this technology to its full potential. With Raytracing, entirely fresh gameplay mechanics would be possible. And with tensor cores they could also utilize them to power AI and more in their next games. The possibilities are nearly endless!
For Nvidia, this also makes sense as, provided third party support is good, would allow them to get DLSS and RTX into more games on the PC as well. I can already imagine Jensen going nuts with the marketing like RT on the go thanks to our technologies, unbelievable, extraordinary etc etc.
Honestly, it just makes sense to get the entire RTX ecosystem into one of the most valuable and most selling platforms. Exciting times ahead!