Well, the last Idol winner's single couldn't hit the T10, and Idol has bigger ratings than Voice. And since iTunes sales count as votes, I suspect that now until 7 AM PST will be when a huge chunk of the sales come from. Of course, these are original songs so the winner's song could be a legitimate "single" for more longevity. Though the only Idol winner's coronation song that smashed radio was A Moment Like This.