In 10 years, we'll have a thread entitled: "Why do people still say the 3DS won last gen?". Then they'll rationalize that position by focusing entirely on whatever arbitrary and/or subjective metric to say the Vita was actually the true winner.
I'm calling it.
(In fact, I can see this thread being made sometime this year. In that thread, YoY will be the sole determinant of success. The reasonable people will try to talk some sense into the deliberately obtuse people and we'll have another double digit thread on our hands. Go GAF.)
Spot on.