Or you build a team that has talent and the QB does not have to worry about swirling winds, heavy rains, snow. NO TEAM HAS AN ADVANTAGE in snow, wind. The wind picks up when Manning throws a pass and it is picked. Orton throws a pass appears to be perfect the wind picks it up and sails it 10-15 yards over the WR head.
0 advantage. That myth has grown so much because fans (Not saying you) like to drunkenly dance with their shirts off in the snow to get their 15 seconds of fame. The players hate playing in the cold.