IT all comes down to what happens over Oct through Dec. MS have the extra exclusives but Im not seeing them match the crazy sales of the PS4 for last month. They might come close as Sony really don't have much else to promote this Christmas..that said they don't really have to.
I was about to say that last statement. PS4 appears to be the console of choice this gen. At least it seems to be that way for the mass market. Now that should not keep XB1 from be profitable as long as MS make strides to do so. My main concern for XB1 (as a gamer) would be if support for it will remain throughout the gen from 1st, 3rd parties and indies.