I don't understand why people think that Sony is at a disadvantage going last because all the major multiplatform announcements will occur at Microsoft's show.
The truth of the matter is, even if Sony were going first, they wouldn't show off any multiplatform titles anyway. Sony has to fit 4 platforms worth of announcments, demonstrations, and trailers into 90 minutes. They aren't going to waste their time talking about games that will just end up being covered by their respective publishers. Unless it's a AAA high profile exclusive such as Metal Gear Solid 4, don't expect to see it at Sony's conference outside of their upcoming game compilation videos.
If anything, I'd say that Sony is at an advantage by going last because they'll have the the most recent announcements which will remain fresh on the minds of those in attendance and those who watch all the conferences. They'll also be able to see what the competition is bringing to their respective conferences and make adjustments to their own, if necessary.







