In a interview with Edge, the anti-Nintendo analyst Michael Pachter said, "Activision never said anything to me, but I know that [for] big games like Call Of Duty they said, 'No, we're not putting it on there if you don't give us a conventional controller'. So they gave in."
Sorry, Michael Pachter, I don't trust you. AT. ALL. How do you "know" this if Activision never said anything to you? Did you know Activision puts Call Of Duty on almost anything? Whether it be a PC, an HD console (Xbox 360 and PS3), a Nintendo DS, a PlayStation Portable, the Wii, an iPhone, or a BlackBerry, you name it. I doubt they hate the screen so much that they would require Nintendo to make this. . .
. . . in order for them to put Call of Duty on the Wii U. While this. . .
Wii U GamePad you don't need to buy a headset to play online, instead you can use the built-in Mic and speakers (or you can plug a pair of ear buds into the headphone jack)! The only thing the Wii U Pro Controller is good for is local multi-player games and fighting games like Street Fighter or Tekken (where it can be distracting).