I could see if the Pats got the low inflation balls and the opposition got the higher inflated but that did not happen. Even if the balls were replaced with Nerf Dog Spiral Squeak Footballs, they still used the same balls.
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Each team has its own set of balls used during the games. The Pats only used theirs and the Colts only used their own.
Apparently the Colts forgot to bring their balls. Sorry, couldn't resist.