I agree as well. Twilight Princess also had trailers with content that didn't even end up in the game. Moblins that looked extremely
bad@$%, they also had many field areas not shown in the final version, a dungeon, a wooded lake area, an amazing looking forest, an ocean type area with coral, and promises that it was going to be the best zelda game ever, that it was going to be hard, that ganondorf was going to play a different role, that there would be tons on sidequests and content, that it was going to be a 100 plus hours of gameplay, (Only about 60), a large role was interaction with animals, (there was barely in the game), and so on.
So you see how some of us following the hype could have been thrown off a bit? Its not that it was a bad game, its that they lead us to believe it would be so so so much more. When I played through the game and couldn't find half the content I was excited to go through, I was dissapointed.
So far we know very little about Skyward Sword. They never told us it was going to be the best, they never made any promises either. They aren't setting our expectations above the ceiling, and that is a very good thing. Plus, I like surprise. I knew the first two dungeons of Twilight Princess before I even bought the game.