Earlier quoted context omitted.
In that form factor? Unlikely. My guess would be somewhere around PS3/360 performance, perhaps with better graphics.
The Switch uses a custom Nvidia Tegra processor which would give it at minimum the performance of the PS4, likely better: https://blogs.nvidia.com/blog/2016/10/20/nintendo-switch/
Edit: Pastebin has what purports to be a spec sheet[1], but this 1024 FLOPS/cycle business sounds inscrutable to me and it's not verifiable anyway.