Playing a few days out of the year at practice in cold weather climates won't help too much. The Pats play there all year, so either way, they still have the advantage. Plus, who knows when it's going to snow? Are they supposed to check out the news and wait last minute to book a plane just to practice in the snow? As I said, the Pats are there all year round... the Colts would have to play in cold weather all the time to adapt, it's not an easy change, and it has little to do with football skills.