What a fuck up by MS to say the least. Halo 5 will still sell really well but the franchise most definitely ain't what it used to be anymore. Also shows how weak Sony and MS first party is when I say Halo 5 will still easily be the best selling exclusive on either console. Sony and MS don't have any big franchises to compete with the big boys, simple as that.
5 million (if the US performs similar to UK percentage-wise) is not a tall order for Uncharted at all, Uncharted 3 shipped that many in its first month alone.