Sony's and Nintendo's approach to E3 is very different.
Sony likes to show some big projects, build a lot of hype between fans - but all of this for some future days.
Nintendo on the other side is known to concentrate on the titles which will be in shops holydays 2015/start of 2016.
So for me Nintendo's E3 is to see which games I will be buying next half a year. And Sony's E3 - is to see what gamers will be talking about on forums next 3 years. Both is good, no direct fight or win here.
But currently not MS not Sony didn't show me the games to buy their consoles.