I don't understand the stupid gifs and response. It's a major exclusive on a brand new console, i'd say it will probably sell more than that.
To get the console wars tension out of the way, I wouldn't expect it to achieve that on the PS4 either.
That said, the most optimistic forecasts for Xbox One sales till March are 5million units I believe. So that's already an attachment rate of ~25% in the best case. One in 4 persons buying an Xbox One need to buy DR3 and if Xbox One sells less, let's say 4 million units which I believe isn't unreasonable, it would need to be 30% already.
Now you're thinking, "well, but it's a console launch so the compitition for sales isn't that big".
While that is true to some degree there are still a ton of huge third party franchises releasing. Battlefield 4, CoD, AssCreed 4 which are all way bigger franchises.
Add to this the other first party releases and the fact that sales nowadays are heavily frontloaded which means the most sales will most likely come from the first couple of weeks, where the total number of Xbox One units sold will be even less (though I'm not entirely sure that's true for release window periods).
Last but not least you also have to keep in mind that it's a M/18 rated game (depending on the country I guess) so that is shrinking the possible buyers even more.
That's why I conclude that goal is pretty ambitious. It's not impossible though.