Doesnt unveiling Xbox Next last work to MS benefit?

MS now knows what Sony plans and will be able to see how media/fans respond to PS4 unveiling. Doesn't this allow MS to focus the Xbox Next unveiling to both show sell-able differences and minimize PS4 high points? Doesnt this allow MS to maybe say OK we were debating how much memory to put in the Xbox Next and now decide on putting the same amount in the Xbox Next.