Quite surprised they learned nothing from Nvidia and their failures. So it's pretty funny that they've gone to Nvidia for their tech lol.
I remember when the first Gameboy came out. Oh how I lolled, because I had an Atari Lynx that absolutely wiped the floor with it. Yet the Gameboy ended up the victor (by millions upon millions of units) because it was smaller, batteries lasted ages and etc. It was black and white, mono sound etc but that didn't matter one jot.
That's why Nintendo have always won their handheld battles with other manus, because they have kept them small. This thing? FFS. I would need to carry a ruck sack, neoprene cover, charger, the controllers (one of which looks like a Dreamcast controller) and so on. So absolutely no different to the £40 7" tablet I carry now, Razer Serval controller, external charging brick, charger etc. It should come as no surprise that I have used that set up once since I bought it and it's sat in a drawer ever since.
Having said that Nintendo hold the aces because of their games. No doubt Mario and Zelda will absolutely smash it.