It has active cooling when docked, going by the leaks and the vents on the device.
This doesn't make any sense. Shield TV is capable of rendering at higher resolution. Pixel C is capable of rendering at higher resolution. Those statement go against most of the know real world usage cases of recent Tegra chips.
So is the rumored device. Is just if you want PS4/XBOne games at similar framerates, that's the compromise.
If he's legit, I'm thinking he talking about an specific scenario (a game?), where the effective performance they are getting 1/3 XBOne. Deferred rendering or some other high-bandwidth dependent scenario could have that effect, while other shading scenarios would offer different compromises.