for me, it sucked.
M$ - use kinetic heavily, or so i'm told (didn't watch it). although my friend said they should use it, like windows 8.
Spoiler warning:
They are also getting a halo 1 remake & halo 4.
EA - I hate EA, so i don't give a frick about them
Ubisoft - See EA
Sony - I heard there wasn't anything for the ps3. I watched the Vita bit, and it was everything we already knew, expect the price.
Nintendo - It was everything we already new for the 3ds for the most part. Why did they show off OoT:3D?! It comes out like next week. as for Wii U, for me, they marketed it as a wii peripheral rather than a new console.
overall a bit disappointed at everything. for me, it would be between Sony & Nintendo that had the best, but thats not saying much. :/