No, I am not overlooking anything. If anyone cares to read, there is a reason (google is so hard to use and damn hard to search for on the net, I know):
The Wireless Controller has been redesigned to allow for higher data transfer speed between the controller and the console. This also required creating a new expansion port design for headsets and future controller add-on devices which is different from a standard audio plug input.
I am making a new interweb term, learn to search, L2S!!!