The bears won because of their D.
The weather helped obviously. But the game strategy to throw the ball on nearly every play in weather like that was bound to create turnovers, Saints knew it, they just hoped their points would out weigh them.
Bad calls didn't cause all those turnovers in the first half. And really if the bears O weren’t so bad they would have had TD's on most, if not all, of those. Saints D disserves some credit for keeping their team in the game as long as they did too.
It sucks to see the Saints lose that game, but not to give the Bears D the credit they disserve is weak. To blame the game not on poor saints play and good bears D, but rather the refs is a cop out.