That's Phil Spencer, one of Microsoft's top gaming executives. Sakaguchi, of course, is Hironobu Sakaguchi, creator of Final Fantasy, now at Mistwalker, where he has released a few Xbox-exclusive JRPGs like Lost Odyssey and Blue Dragon.
Hope Phil isn't just messing with us, because the Xbox One sure could use some JRPGs. (I've reached out to Microsoft to see if this is for real.)
UPDATE: Guess he was joking:
— Phil Spencer (@XboxP3) February 22, 2014