The Steelers are one of the few other cold weather teams, and they've got the rushing attack for that kind of weather. Parker does have some power, but he's more of a slasher/speed back though. Considering the Patriots could be playing on their fieldturf, I wouldn't expect the snow, or cold weather to be as big a factor either. I also believe the Patriots have a heating system under the turf? I'm just hoping the Patriots don't play anymore games in strong wind this season.
Also, Brady's proven he can throw the ball even in very bad conditions. I've noticed Big Ben can sometimes throw the ball well in bad weather, but I've also seen him have a hard time with it, and I remember a few games where he changed gloves, or went back and fourth between wearing gloves, and not wearing gloves because he couldn't get a good grip on the ball. What's funny is Ben didn't start wearing gloves until he noticed Brady doing it, and I believe he actually asked Tom about wearing them.