Those commercials aren't 1 or 2 minutes, they're 30 second spots. They do not add any time to the game, except maybe marginally if they hold the ball for a few seconds for the broadcast to get back. Typically though they use those late timeouts to the end anyways, until the officials force them to break.
Media timeouts range from :90 to :180 seconds.
Media timeouts (typically) don't occur in the last minute of close games, except maybe for the first called timeout of the second half if nobody has called it. So for what this article discusses, and the post I was responding to (last minute of game time), the breaks are mostly :30, save for when a team calls their full (:60).
Tournament games overall certainly are a bit longer, mostly due to extended halftimes and media breaks, but in the last minute, I think the only reason they might be worse than regular season is the competitiveness of the games.
Last Edited: 3/31/2014 12:49:00 PM by anorris