Im thinking this is a BS post. The quality leaks from Emily Rogers and Laura K Dale have reported a 720p screen. Even in the post, a lot of it seems to be speculation, and yet this is someone who is taking part in the stress testing of the hardware? Like someone else mentioned, its unlikely for them to use the A72 cores with them being so new. With the Tegra X1 being what has presumably been the dev kit hardware, any changes to the final hardware would want to avoid significant architecture changes, basically if your dev kit has a quad A57, you wouldn't want the final hardware to be a octacore A53, that would play havoc on developers. Outright increases in performance would be welcome, something like doubling memory bandwidth would only help developers code run better for example. I would think that since Maxwell and Pascal share so much in common, developers might not even realize there was a change unless Nintendo/Nvidia told them.
Bethesda is now on record talking about how impressed they were with the Switch when Nintendo demoed it at E3. They also confirmed Skyrim will be the same game on Switch no matter what screen you play on. Bethesda has a history of not supporting Nintendo hardware because of hardware limitations. The fact that they are supporting Switch is a good sign that performance of the hardware is pretty decent.
