Because only two points get issued (rather than three). It's the draws that kill you. Also, a win for Oldham put them back in the hunt.
but... if oldham and swansea score stay as it is, both are 2 points behind us. whereas a drawer would mean swansea are 1 point. and they have the better goal difference if we end up on sane points (at the mo). this way they would HAVE to win and not draw