This morning on his radio show, Damon Benning gave a good story about Adrian Martinez and when Damon's thoughts on winning the QB battle changed. Damon is an interesting position because he gets access to practices and scrimmages as a former player, but he is also a member of the media, as he has a radio show every morning.
Go to segment 3 of today's (August 31st) show, and you can skip to the 14:00 minute mark. Damon gives a very good example of what makes Adrian Martinez such a talent at QB.
Here is the link to the podcast. http://www.1620thezone.com/sharp-and-benning-podcast/