The eyes weren't on them live. The live show isn't what gave them that boost. What gave them that boost was Microsoft being fucking inept and trying to ban used games. The biggest ovation of Sony's conference last year was them saying you could use used games. Which when you think about it is pretty fucking sad.
Those eyes that were on them were doing it later when they got home from work on
Youtube, and through other outlets where you can get gaming news.
And it's not a lazy argument. Nintendo's sales are bad because of their shitty job at marketing the Wii U. Pretty much year round, pretty much all the time. There is zero chance that if Nintendo came out last year on a stage and gave a presentation like Sony or Microsoft that they would be rolling in the money right now on the Wii U right now. The system itself has too many problems. The reason it works for R* is because they are consistently good at getting their name out there where it needs to be. It doesn't need E3 because in reality, none of these companies need to do a stage show every year to do well. Especially when that stage show is on in the middle of the day, in the middle of the week, when most people aren't able to see it live in the first place.