Making you still be in danger while searching the backpack, but without dumping you out of the game world to search it.
ok a good example is the resident evil games the menu system overlays on the screen when need to do something and you cant see much if anything else on the screen when this happens but the game is still running in real-time so you cant see if a zombie you might hear is to close to you are farther away. with the Gamepad you can see everything on the big screen you just have to take the risk at looking back and fourth from the GP to the big screen not knowing if your luck has run out.
Agian you are still in the gameworld in the same spot you just bend down to look in your pack or so and everything is still happening on the big screen your just nealed down to find something or grab another weapon or so.
S Explain to me an other how this takes you out of your game or the game i mean it is not like the Wii U GP is placed on the Floor or something and ya have to look straight down at your floor.