Originally Posted by flyerCO

Seat map is no indication of how many seats left to be sold. While Americans tend to assign seats ahead of time, most in the world don't. Thus 20 seats on seatmap could have 10 people that haven't picked a seat yet.

No way to give a clear cut odd. DTW/PVG isn't just O/D traffic, but connecting to/from MU/FM for connections.