Wolf
100% Texan
http://www.footballoutsiders.com/stats/rb.php

DD was ranked 26th and Wells was ranked 28th
Regular season totals, playoffs not included
Revised as of 1/3/2006
Running backs are ranked according to DPAR, or Defense-adjusted Points Above Replacement. This number represents the total number of points scored due to plays where this RB carried/caught the ball, compared to a replacement-level RB in the same game situations. DPAR (and its cousin, PAR, which isn't adjusted based on opponent) is further explained here.
The next statistic given is DVOA, or Defense-adjusted Value Over Average. This number represents value, per play, over an average RB in the same game situations. The more positive the DVOA rating, the better the player's performance. DVOA (and its cousin, VOA, which isn't adjusted based on opponent) is further explained here.
The final statistic is Success Rate. This number represents the player's consistency, measured by successful running plays (the definition of success being different based on down and distance) divided by total running plays. A player with higher VOA and a low success rate mixes long runs with downs getting stuffed at the line of scrimmage. A player with lower VOA and a high success rate generally gets the yards needed, but doesn't often get more. Success Rate is further explained here. It is not adjusted for opponent.
* These numbers do not separate the performance of a running back from the performance of his offensive line. (You'll find numbers that try to do that on this page.) Be aware that one will affect the other.
* "Points scored due to plays" is based on a larger model of how yards are translated into points, and is not a measurement strictly of touchdown passes.
* All fumbles are considered equal, whether recovered by the offense or defense.

DD was ranked 26th and Wells was ranked 28th