Tungsten lights don't necessarly look fake when playing for daylight. Several films shot in a studio only use Tungsten lights, not HMI and it doesn't look fake (for example "Amour" by Haneke shot by Darius Khondji).
I agree with David, I think it looks fake because they overdid it. Too much different lights coming from toom much several directions.
I don't remember which DP said that but "the most difficult part as a cinematographer when you light a scene is not to turn lights on but to turn lights off".

and my favourite audio mixer, colorist, VFX artist, editor, plumber, gardener, cook, make-up artist, hair dresser...

Hateful Eight was shot on 65mm film, not Alexa

Indeed, the C300 only outputs 8 bit via HD-SDI ! (which is a shame since HD-SDI standard is technically supposed to be 422 10 bit...)

Even CGI shots need to be lit and framed, that's what Lubezki supervised on Gravity. Just because the majority of Gravity is CGI and not live action footage dosn't mean there is no cinematography in it.

Having a mirror storage is good but remember that even if you have two discs in one box you still have ONE box. So for example, if this box is stolen from you you'll lose all your data.
No matter what disc you buy, if you want real safety your back-up disc shouldn't be in the same "box" as your master. Always have at least two seperate volume that contain your data (one at home and one at your office for example)