One of the biggest letdowns in gaming for me was not necessarily a game. Nintendo's E3 2012, that was Nintendo's year to win it all, but the only thing of interest was Pikmin 3(which is amazing by the way.) I was pretty depressed after with the lame conferences by the big three that E3, but Nintendo's could have been so much better.
I also agree that that Zelda should have won that death battle. She has magic powers, can turn into a ninja, and a piece of the Triforce. How on earth did she lose to Peach!?