Roger wants to take one last shot for #1 in 2012, so he's gotta get points everywhere.
This. Apart from him getting busy with what seems to be some kind of a 'farewell tour' this year, appearing at tournaments where he didn't bother to show up for quite a couple of years.
His commitment to play the South American tour in the late fall/winter this year also points in that direction.
Should win this, barring injury or withdrawl.
Should, yeah. But DelPotro and Berdych, among others, might well be able to do him some damage, if not more than that.