To be honest, I went into this rooting for Microsoft and hating Nintendo, and came out completely psyched for Nintendo and a little bit excited for Sony's Move.
I feel like Sony started off poorly, trying to pass themselves off as the end all be all of 3D technology, after Nintendo had just unveiled a handheld, that, judging from the Kid Icarus teaser, has graphics almost as good as the Wii (which isn't saying much for a home console, but is incredible for a handheld), and played 3D with various intensities, without expensive, uncomfortable, and stupid looking glasses. More than that, they used the word "ecosystem" way to much and way to erroneously when referring to their products. In the end though, Move did get me a little excited (mostly because of the Sorcery demo shown. THAT was cool).
All in all, Nintendo did well, Microsoft did meh, and Sony half convinced me to buy Move (I'd need to hear more before committing), and made sure that I would never buy their 3D crap ever (they came off arrogant and little foolish, especially after Nintendo's amazing performance)