If that's true, then I would raise my GOW figures, because it will still sell more.
That is true. Its an official statement from Sony.
God of War 3 sold around 6m on PS3 alone and has featured several times on PS Store's top sellers on PS4. Its likely above 7.5m now.
Eh, I don't think the release of Ascension was enough to prove that (provided that's what you're basing that idea on). Had God of War PS4 been God of War III, but for the new gen, I think it would still sell a good 4m or so (which is fine for a God of War title).
In this case, adding a few features to spice things up will result in more sales, but God of War would have had HUGE buzz regardless.
I don't see where you're getting at here, a remake of GOW 3? If you're talking about a new game with GOW 3's scale that wasn't possible with the story.
GOW isn't Uncharted, it never gets massively bundled.