Think it's because the same feed is being broadcast in America as well. But, he didn't commentate like this for World Cup, so, I don't know.
Its only for america by the sound of it, talking in dollars all the time and almost insultingly dumbing it down for the viewers
Pretty ridiculous. As anyone who's getting up at 4:45-7:45 in the morning in America to watch this game is already going to know these things.