Not likely

I wouldn't rule it entirely impossible. I personally expect it to sell at least 5 million. I know Amazon isn't a perfect tool to form predictions, but it's the only thing we have, and horizon is doing incredible right now on the bestseller charts. Been high on the charts for weeks and already moved to #1 yesterday--8 days from release. AND the collectors edition is also already up to #8. Pretty damn impressive relative to how other games have performed on the Amazon charts, if my memory serves me correctly. 

Especially with the great reviews it's gotten, I would make bets HZD sells at least 5 million LT. 

i think it can sell 4-6 million. 8 million seems a bit much for a new IP.

I think we need to keep our expectations In check. 4-5 million would be excellent for a new IP on one platform, let alone nearly double that.

I do hope it sells quite well and becomes a franchise.

If it will be part of millions of PS4 bundles without other bundle options for customers then maybe. Otherwise I doubt it. Only games which reach these numbers on a single platform are huge games with a crazy marketing budget. Like CoD and so on...(well, and a few very lucky ones)

Superdata needs to stop saying things.

Not likely, but idt it's impossible. TLoU sold 7-8million on PS3, right? And this was despite PS3 having a poor userbase in the US and TLoU releasing at the end of the 7th gen. Ontop of this, PS4 exclusives and games sell well far more consistently than those on PS3 ever did.

I could see it if Sony did a bundle, but all those are dedicated to third-party marketing deals this holiday.

Not unless it's bundled as heavily as Uncharted 4 was, I cannot see it selling that much. 3.5-4 million sounds about right.