Uncharted won't break 2 million globally on launch week IMO. I think you can see that Halo is install base immune when it comes to launch week. Every full Halo game on 360 launched with pretty much the same amount in the USA, so there was more or less zero launch week growth even though Halo 4 had a massively larger install base to sell to.
Also Xb one install base in the USA today is > 360's US install base at the time Halo 3 launched. So that suggests a 2.3-2.4 million launch week in the USA is very likely. The core day 1 fanbase will always be there for Halo, and it will turn out for Halo 5.
With Xb one's diminished install base outside of the USA I think it will be quite close LTD between these two games. But I think Halo 5 has the edge, likely to sell at least 8 million LTD. Uncharted should do >6 million, but may have a hard time breaking through to 8 million.
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