I wasn't aware of such a deal, but in my world, a bundled sale, is a bundled sale, is a sale. Forza 2, for example, was a pack-in title with the 360 at one point, but I won't discredit what it did because of that. Wii Sports? Same thing. A sale is a sale.
Because it wasn't the case.
I got my PS4 with Uncharted 4, yes, but I could have gotten it without is just as well, I just found the deal to be better for a game I wanted, if it was the CoD bundle for example, I would have gotten only the PS4.
Some people are mixing a good bundle with a mandatory bundle like the Wii had for Wii Sports, you literally had to get it if getting a brand new Wii, for years.
Well, this are the December sales for America:
PS4 - 1.568m
Uncharted 4 PS4 Slim 500GB Bundle - 1.2m
PS4 Pro - 238k (480k LTD)
Just because you could buy a few older Ps4's not bundled with Uncharted 4 doesn't change that Sony only released PS4 Slims with Uncharted for quite some time.
And even with Halo 3's heavy bundling, this was never the case for Halo 3 that people had pretty much no othe choice for some months.
So, how many of these people from that month alone and only from that region got Uncharted 4 who wouldn't have bought it otherwise? 800k maybe? Add other regions, the November and so on and you get millions of "sales" not really wanted.
It's just how it is, Uncharted 4 was for some month pretty much part of every sold Slim and I doubt that more than maybe 20% of these people would have bought the game if it wasn't bundled.