http://gamingbolt.com/sony-has-the-most-number-of-booths-at-this-years-e3
Apparently Sony has 8 booths while Microsoft has 2 and Nintendo has 3 of them.
The guy is counting in the wrong way...
Booths: Sony (3), Microsoft (2) and Nintendo (3)
Meeting rooms: Sony(5)
One of MS booths is close to two times the biggest booth from Sony and Nintendo... I can say the spaces are even... Meeting rooms are for official business or press only.
You can see the map here: http://www.mapyourshow.com/shows/index.cfm?show_id=e314&norepeat=true
