All seems believable. RAM seems low. But I'm firmly in the ballpark that at its absolute best this is still going to be another case of Nintendo aiming for an affordable, semi-mobile device that is ultimately undercut in processing power by Sony and Microsoft. Modern architecture, but low clockrates, and low RAM (little bit worrying).
No matter what anybody says I refuse to buy Nintendo even remotely competing at the same PS4/XONE level until I see it for myself, Being a hybrid device packing its entire hardware in a portable screen just further enforces my belief. Sometimes I think fans live in la-la land where they expect magic hardware that offers the impossible. I cannot fathom a scenario where Nintendo doesn't try to make this affordable to consumers, affordable to produce, and conservative in processing power to minimise heat and battery use.
That being said, I'm very curious to see if any overclocking takes placed while the system is docked. Modern hardware says it's entirely possible. All you need is an increased, stable power draw and efficient cooling. Modern CPUs and GPUs overclock effortlessly with a few clicks. Whether Nintendo will bother with that though remains to be seen, especially if they don't want to risk hardware instability.