Another thing to consider is that with Bledsoe at QB, the entire defense was likely keying on McGahee. With a mobile QB like Losman under center, they will have to worry much more about the QB running/throwing the ball, and that could soften things up a bit.
That could also take away from his attempts.
it's not easy to score TDs on the goalline so I don't worry too much about effectiveness. As long as he gets enough attempts down there, he'll put up solid TD numbers. The addition of Anderson at LG should also improve the interior run blocking.
When you look at some of the numbers inside the 5 you can see how bad McGahee really did.For RBs who had at least 10 attempts only Marshall Faulk and Clinton Portis had a lower ypr inside the 5.
For RBs who had at least 20 attempts he had the lowest ypr inside the 5.
Here's how hard it is to run inside the 5:
Tiki Barber: 10 TD's on 15 attempts
Thomas Jones: 7 TDs on 11 attempts
Curtis Martin: 8 TDs on 18 attempts
Dominick Davis: 10 TDs on 19 attempts
Jerome Bettis: 12 TDs on 23 attempts
Jamal Lewis: 6 TDs on 9 attempts
So I guess I need to add another requirement for McGahee to be in the top 5. He needs to:
1. Bring up his yards per carry.
2. He needs to rush 350+ times.
3. He needs to play all 16 games.
4. He needs to get at least 25 carries inside the 5 again. (only 6 teams had that many last year)