While it's more powerful than the Switch, for the latter games are getting optimized to run well on the hardware. So not sure they will run better or more beautiful on the steamdeck as I doubt there will be many games optimized for it.
Another question will be battery life. The chip is basically a tweaked Ryzen 7 4700U with a more modern RDNA2 GPU instead of the old Vega GPU, but that still should consume quite a bit more than the Tegra in the Switch does. I honestly don't expect more than 2 hours of battery life except they make it at least as heavy as what the steamdeck also looks like, especially with the button/joystick configuration: The Wii U Gamepad. It seems already quite a bit thicker than the Switch, so I fear weight could be a problem.
The Nintendo eShop rating Thread: http://gamrconnect.vgchartz.com/thread.php?id=237454 List as Google Doc: https://docs.google.com/spreadsheets/d/1aW2hXQT1TheElVS7z-F3pP-7nbqdrDqWNTxl6JoJWBY/edit?usp=sharing
The Steam/GOG key gifting thread: https://gamrconnect.vgchartz.com/thread/242024/the-steamgog-key-gifting-thread/1/
Free Pc Games thread: https://gamrconnect.vgchartz.com/thread/248138/free-pc-games/1/