I would give it to Sony, though narrowly. Mostly it was the equal attention to PSP and PS3 that put it ahead. The motion control was more of a liability, i mean, i laughed when i saw them doing archery with their device, the same exact thing that Nintendo had done only hours before, and with a device that was a final product, not a prototype.
From what i've read, Nintendo goes in 2nd, though again narrowly. Mario Galaxy 2 and Other M saved their asses from disaster, and put them over Microsoft, just because both games were very unexpected. They mainly get points for having their advanced motion solution that is here, now, and ready to roll out next month. A working solution with actual software. Not just a promise, but fulfillment.
Microsoft goes in 3rd, though again, quite narrowly. Natal was impressive, but too immaterial to really make the difference for them. If they, perhaps, had had a better on-stage demo, as well as a release date this year, it would have helped. Their software base was solid, but ultimately rather expected. Shadow Complex and Left 4 Dead 2 were the only games that came out of left field, everything else had been spoiled. \
If you judge the conferences objectively in terms of content, i think that this is the best answer. Sony had the most new content, Nintendo had their shockers, and their actual working present control scheme, and Microsoft had the least fresh, unexpected content, though not by much.
