Watt had one sack taken away from him earlier this season when it was deemed about a month after the fact that Ryan Tannehill was attempting a run play and not a pass play.
However, Watt may pick up a sack down the road for a play this week, when he sacked Jake Locker for a second time on a fourth down inside the Texans red zone. Due to a fumble that happened on the play, Watt was not given a sack, but the team was credited with a "team sack". I am sure the play will be looked at, just like the Tannehill play, and Watt's number might be adjusted to 16.5 sacks and two forced fumbles.
Here is a current breakdown of the three main candidates, courtesy of Advanced NFL Stats:
Watt: 15.5 sacks; 15 pass defensed (5 for INT's); 59 tackles; 27 tackles for loss; 32 QB hits; 1 forced fumble; 0 INT
Miller: 15 sacks; 2 pass defensed; 53 tackles; 24 tackles for loss; 19 QB hits; 5 forced fumbles; 1 INT (pick six)
Smith: 17.5 sacks; 0 pass defensed; 51 tackles; 15 tackles for loss; 23 QB hits; 3 forced fumbles; 0 INT
Since Miller and Aldon Smith play similar positions, and since Justin Smith is often used as a benchmark for the best 3-4 DE in the game, here is the comparison with Watt:
Justin Smith: 3 sacks; 1 pass defensed; 59 tackles; 9 tackles for loss; 9 QB hits; 0 INT
Final note: Advanced NFL Stats also compiles more obscure stats that breaks down the impact of play on the field, including WPA, EPA, EPA/g, SC and TF. They provide a glossary to break down each stat. Watt's numbers across all of these field stats are far superior to any other defender in the league. Honestly, it is not even close. For stat geeks like myself, it is fun to break down. Take a look to see the numbers; it is fascinating.
[ Edited by MadDog49er on Dec 4, 2012 at 8:55 PM ]