He's not a particularly outstanding head coach in my opinion. I'm probably putting an over-emphasis on X's and O's ability though. You have to give Les a lot of credit for the attitude he instills in his team.
I'm not well versed on the X's and O's so I can't answer that, but he definitely knows how to get them ready to play and has them confident in themselves so they never feel like they're out of a game. He may not be the best coach, but he is much better than most people (and way too many LSU fans) give him credit for.
Now atleast the anti-Miles crowd can't swing on Saban's trophy while yelling how he's a God.... Les has one too.