Natal is the easiest to sell to mainstream audiences.
All you need to say is that you can control the menu without a controller. People will buy it because it'll remind them of movies. They really don't even need games to support it but they will have games. X360 Natal consoles are going to be successful.
PS3 wand is a difficult thing to sell to the mainstream audience. The only market it could attract are casual users of the PS3 and that's if there's good software to support it. It's also not the coolest device which I think is more important to a casual user.







