1 or 2 PSI in a football does not make a [big] difference. If anything, an under-inflated football is harder to play, like in the AFC Championship game in hurricane conditions. Saturation of an under-inflated football makes the ball become like a weight. Now add in the cold, then ball becomes even heavier. When a football is inflated more, it carries better. It actually would have been more beneficial for Tom to inflate the balls more that day. Luckily for him, the officials did it for him at halftime. UMMMMM….He tore it up the 2nd half.