I watched all 3 conferences and there's only one thing I've got to say, Microsoft won this E3 easily. The final announcement was such a megaton hit that there was almost no way Nintendo or Sony could top it.
Nintendo presentation wasn't so bad if you forgive them for not showing any hardcore game but it didn't really go into the unexpected and most people (me the first) got disappointed.
Sony, unlike what many people think, had a lot of pressure as they had to show something worthy of usurping the Square-Enix announcement. I waited for more than 1 hour 30 and all I've seen is God of War 3 and MAG. I wasn't disappointed again and much more than with Nintendo.
That's why I think that after everything has been said and done, Microsoft won this E3 and the FFXIII announcement will remain the only thing for this E3 that people remember.
How many cups of darkness have I drank over the years? Even I don't know...