As a Nintendo fan/owner I ranked it as follows
1. Microsoft
Their conference was non stop, there wasn't any stage where I was bored, except maybe the Facebook/Twitter/Last.fm content, but at the same time I think it's good that they focus on more than just gaming. I think the main reason I give them the win is based on the fact that out of nowhere they've got the biggest exclusive lineup for the rest of 2009. They had plenty of content for this holiday with L4D2, Splinter Cell, Forza 3 & ODST plus exclusive DLC for MW2, that's all pretty impressive. There was still plenty left for 2010 as well with Halo:Reach, Crackdown 2 & Alan Wake.
2. Nintendo
As a Wii owner, Nintendo had most of the titles I was interested in or will look to buy, however their shorter conference was still a 50% borefest. The sequel to one of the best games ever in SMG2, another NSMB, plus Metroid: Other M and later at E3 announcing Zelda Wii. That's 4 massive titles, but unfortunately 3 of the 4 won't be out til 2010, hopefully the Wii Motion Plus titles will last me until then. Red Steel 2 looks pretty cool.
3. Sony
First of all I found their keynote the most boring of all. As far as I'm concerned Sony just proved that there's no real point in owning a PS3 until 2010, hopefully there will be a price cut before then to make it worthwhile. I guess Sony's domination is delayed for the 3rd year in a row. 2010 looks huge, however 2009 doesn't, owning a PS3 must be character building with all that waiting. FF14 was announced exclusive but SE & MS both announced afterwards that it's not. GT5 is still not given a release date and we know it won't be clashing with GTPSP's release, plus given no live gameplay was shown it could even be xmas 2010 before we see it outside of Japan. Agent only had a logo shown and I've read that it's also unlikely to be exclusive after all. GOW3 looks great but lets see it with a fixed release date first. Uncharted 2 looks awesome and MAG has a lot of potential. PSPGo is ridiculously over priced, I guess they need to turn a profit some how and what better way than ripping off early adopters. I know I've focused on a lot of the negatives here, overall it was closer than I've probably detailed here, however I just found Sony's was definitely the weaker of the three.
I know I've ignored a lot of handheld content and the Sony/MS motion controls, but both subjects mean little to me. Sony's PSP content was stronger than Nintendo's in fact I found Sony's keynote to be focussed on 2009 PSP content but 2010 PS3 content so maybe that affected my ratings. On the other hand, I thought Natal looked more polished and more of a differentiator compared to the Sony wands that looked like roll on deodorant sticks.
