I'm probably the biggest Vita proponent that I know. But even this is way too far-fetched. There's no way it would've ever gotten this much support from developers. And it would never sell 70M. Not even. Even half of that (35M) would've been considered a huge success.
That said, I don't think it needed that amount of support from devs out of the gate. I feel that its launch lineup of games was at least sufficient (Can't expect a full library of must-owns at launch! Let's be real) Uncharted GA, a launch game, is still one of the best games on the console now. It was let down by other things, namely its price, lack of coherent marketing, and being unable to use the same things that made the PSP successful.
"Never argue with stupid people. They will drag you down to their level and then beat you with experience."
-Samuel Clemens
