1) That may be so but I'm taller than him!
2) The problem I see here is that all of this is already possible on smart phones and tablets so the incentive to buy the Wii U specifically for these experience is lowered.
3) I guess we'll have to wait and see but let me go into anecdotal data if you will:
My father was never a fan of video games, he kept telling my brothers and I to get out of the house more and that we were wasting our time (to his credit, we did play video games A LOT). When I brought the Wii to our family's New Year's party in 2007, he was intrigued along with all my aunts and uncles. He even tried playing Wii Golf and he had a really good time. That's the kind of reaction that I don't think Nintendo Land will be able to reproduce.
The Wii U does more than what a tablet or smartphone can do. Playing Zombie U, a masterful game I recommend to be the game early adopters must buy, uses the gamepad with finesse. You can scan your surroundings with the gamepad and do a full 360 look around. While holding the left trigger to aim down your sights if you lift the gamepad up towards the tv it becomes your scope view.
The ninja star game uses the gamepad's infared like the Wii mote, allowing you cursor like aim when pointing at the screen.
New Super Mario Brothers U has you interact with what's going on on the TV.
That ghost hunt game creates multiple experiences through a different view than the other players.
With 360 viewing capability people will still have fresh golf experiences like was displayed using a Wii mote to hit a ball of the gamepad.
The zelda Nintendo land game had the gamepad character using a bow and arrow shot from the gamepad while others used wii motes as swords.
Before the PS3 everyone was nice to me :(