You've already said what's the difference. We know pretty much what Microsoft and Sony will show but we know anything of Nintendo (yes we know ther'll be 3DS and Zelda Wii...but do we really know what these name mean?). Last year te predictions were: Zelda, Pikmin, Starfox, a new Mario. Except for Mario everything else was unknown.
This year will be the same. Maybe they're not able to give us a great presentation as Microsoft or Sony (their shows are great on that front) but the material will be there, plus it will be totally unknown (just rumored). I'm sure Nintendo will have a great conference this year (better than last year even if it was still a very good conference), they'll lack third parties on the home consoles front, but their games will cover that lack.
CURRENTLY PLAYING: Xenoblade (Wii), Super mario 3D land (3DS), Guild Wars (PC)
