Here, I am going to objectively score each conference for E3. This will updated/edited as needed, and feel free to leave me a comment should I miss/make a mistake on something.
I'm using the suggestion of Alpha-Male22
Megaton= 10 points (Megatons are now exclusively defined as an announcement that was as big as Final Fantasy coming to the Xbox 360)
Exclusive = 10 points
New hardware = 10 points
New IP= 5 points
Exclusive content= 5 points
Newly revealed titles= 3 points
5 Exclusive [Kinect Sports 2;Halo 4; Gears of War 3;Halo Remake; Sesame Street] =50 points
13 Newly Revealed Titles[Modern Warfare 3;Tomb Raider;KINECT Tiger Woods;KINECT Madden;KINECT FIFA; KINECT UNNANNOUNCED TITLE; Mass Effect 3; Future Soldier; Ryse; Forza 4; Disneyland Adventures; Sesame Street;Star Wars; Dance Central 2]= 39 points
4 Exclusive Content [XBL Diamond; New Xbox Experience; Youtube; Fun labs] = 20 points
TOTAL: 129 points.
13 Exclusives [Uncharted 3;Resistance 3; God of War PSP collection; Ico collection; Medival Move; Infamous 2; Starhawk; Dust 514; Uncharted: Golden Abyss; Ruin; MNR PSV; LBP PSV; Sly 4]=130 points
3 New IP's [Starhawk; Dust 514; Medival Move]=15 points
9 Exclusive Contents [Bioshock Infinite (Bioshock); SSX (Mt. Fuji); Battlefield 3 (Battlefield 1943); Playstation Suite; Near; Party Room; Street Fighter (Cole)]=45 points
8 Newly Revealed= 24 points
Total: 204 points
25 exclusives[Mario Kart 3DS; SSB WiiU; SSB 3DS; Luigi's Mansion 3DS; Starfox 3DS; SMB Mii; LoZ LA; LoZ OoT; LoZ 4S; LoZ SS; KI]=250 points
1 new hardware [Wii U]=10 points
25 Newly Revealed Titles [ See Exclusives, and ending note Screen with all the titles]= 75 points
Total: 335 points.
After a recalculation, and reviewing some more of the E3 footage, NINTENDO WON.