Bill Gates has an xbox 2 with virtual 3D glasses, brain implanted surround sound, the new M$--- er i mean, Xecuter xbox 2 chip (which will be released shortly after the xbox 2), voice activated everything, a hands free beer holder, a seat which moves with the game, and can also be used as a dunny for those tight moments on Halo 4 when you know that with 2 more frags you can win the match, and can't be bothered getting up and leaving.
On top of that he streams games from a pay per play, beta type Xbox Live server for 1 gigabyte per second connections only.
Either that, or he is a full grown man who has more important things to do than to sit down and play on the xbox, of which i am sure he has seen and heard more than enough of.