Obs]There are articles both ways on this, lets see how the sales look to see if everyone agrees with you. 
I am not arguing which one will sell more, just which one I think is the better product.  I would expect the PS4 to be sell more when they cost 25% less.  However, I am sure that Xbox One will still be competing with PS4 and that games will be developed for both consoles, which is all that really matters to the individual gamer.