Just to clear the air (ha) with everyone:
BB is essentially saying that their (the Pats) process of preparing the footballs to get to the right texture raises the PSI of the football by approximately one PSI. So let's say this:
The Patriots condition the football the way they always do, and bring it to the referees who (supposedly) verify that they are at least at 12.5 PSI. So if the Patriots condition the football at 11.5 PSI (indoors) and the PSI raises to 12.5 because of it, they would obviously show as being in the proper range if the referees indeed inspected them appropriately. So what happens, you take those footballs that the Patriots conditioned indoors which, for lack of a better term, have a FALSE reading of 12.5, outside into the elements, and the drop is going to be way more significant than it would be if the Patriots conditioned the footballs in such a manner that did not raise the PSI to 12.5. So you take the 1.0 or so PSI that the weather will cause to drop IN ADDITION TO the "false" 12.5 reading caused by the conditioning, and the balls will drop to probably about the 10.5 area.
So basically, if the referees indeed did their job and measured the footballs and they were at 12.5 PSI (see: in actuality the balls are closer to 11.5), then that would explain the "significant" loss in pressure from the Patriots' footballs and NOT the Colts' footballs, who were probably conditioned in a different manner that either did not alter the PSI of their footballs OR they were inflated at 13.5 and only dropped to around 12.5 which would still put them in the correct PSI range.