Oculus:
F, audience was totally not into it. Zero interesting or VR-intensive games. No price, no date. Worthless
Bethesda:
B, decent Doom showing, but Fallout 4 fucking blew me away with its features and release date
Microsoft:
B, some slightly interesting bits such as the back combat and controller, but the pacing was right on, very little downtime, showing off lots of games & gameplay. Mostly all about Blast Corps!
EA:
C, the showing of games like Mirror's Edge and Star Wars Battlefront were awesome, but the middle of the show, Pele & sports, was compete shit
Ubisoft:
C, they really didn't have much, and the dancing parts were fucking horrible, but Trackmania Turbo is fucking shithot
Sony:
A+++++, literally the best E3 conference EVER (been watching for ~14 years now) Fucking megatons of The Last Guardian, FF7R, and Shenmue 3. Plenty of other fucking amazing looking stuff like Horizon & Uncharted 4. A few slow bits take away from the elusive S rating.
Nintendo:
F, they put the bullet in Wii U, fucking disgrace of Metroid & Animal Crossing, the only shit on Wii U worthwhile were already announced games. Puppets were cute tho
Square Enix:
D, horribly run & managed, but they showed some new stuff that looked good.
PC:
F, like the Nintendo conference, there were elements of charm, but there was no fucking content at all. One big long shitshow, overall.