at the helm so i did a little research this morning. I think the generally consensus here is that Lawrence's throwing ability opens things up on the ground for our backs, and it does appear that way watching the games, but i wanted to check the numbers to be sure. This is what i found:

With Bryant at QB

Etienne - 24 for 194, 8.1 YPC
Feaster - 11 for 53, 4.8 YPC
Choice - 6 for 35, 5.8 YPC
Dixon - 1 for 2, 2.0 YPC

RB Total - 42 for 284, 6.8 YPC

With Lawrence at QB

Etienne - 22 for 197, 9.0 YPC
Feaster - 12 for 77, 6.4 YPC
Choice - 9 for 22, 2.4 YPC
Dixon - 6 for 99, 16.5 YPC

RB Total - 49 for 395, 8.1 YPC

Adding in the QBs themselves

Bryant - 30 for 144, 4.8 YPC
Total running game with KB - 72 for 428, 5.9 YPC

Lawrence - 9 for 31, 3.4 YPC
Total running game with TL - 58 for 426, 7.3 YPC

As you can see, the total output of the running game has been nearly identical with both QBs, but the YPC average is substantially higher with Lawrence in the game. It's also worth noting that when Bryant is in the game he gets 42% of the carries vs just 58% for the backs while Lawrence accounts for 16% of the carries with 84% going to the backs.

Granted the sample size is still kind of small here and subject to variance (such as the 61 yard run by Lyn-J Dixon while Lawrence was in the game), but the only back that hasn't averaged more YPC with Lawrence in the game is Choice. So far the data supports the theory that the running game is more effective with Lawrence at QB. It also gets everyone else on the offense more involved since Lawrence is keeping the ball himself far, far less than Bryant.

I'll probably continue to track this out of curiously as long as we rotate QBs.