Microsoft Paid The NFL $400 Million To Use Its Tablets, But Announcers Are Calling Them iPads

"Ambush marketing is a marketing strategy wherein the advertisers associate themselves with, and therefore capitalize on, a particular event without paying any sponsorship fee."
Ambush marketing - Wikipedia, the free encyclopedia

This has been a problem with the world cup, so I would not be shocked if these strategies transfer to other sports like the NFL.

Besides, does a deal with the NFL necessarily make it a deal with Fox or NBC, who employ the announcers, and who have their own advertising and commercial deals?