Can anyone say to me why nintendo shos us a grpahic and than they use another in ZELDA U??

[Goremichel]

you can see there 2 kinds of graphics, below the first graphic of the zelda U, a perfect cool and super graphic. but why nitnedo do use now another graphic, a "more simple" graphic? or are these two graphics 2 diffrent zelda games??? I dont understand whats going on in the hood of nintendo o.O