On to the Running game comparisons:

Rashard Mendenhall (18th in total rushing yards)

Carries    Rush Yds       Rush Avg    Runs of 20+ Yds      % Rush for 1st down  

   78           418              5.4                  4                          25.6

Denver's Rush Defense

Rushing Att      Att/Game     Yds       Avg    Yds/Gm      TD      1st Down%

179                     25.6         603       3.4       86.1         3          17.9

AND

Knowshon Moreno (17th in total rushing yards )

Carries       Rush Yds   Rush Avg    Runs of 20+ Yds      % Rush for 1st down  

   109            420           3.9                  0                          22

Pittsburgh's Rush Defense

Rushing Att      Att/Game     Yds       Avg    Yds/Gm      TD      1st Down%

140                     20           536       3.8       76.6         2          18.6

So who will have a better night?

A running back with a 5.4 yds per carry average against a third-ranked rush defense or a rookie with a 3.9 yds per carry average against the top-ranked rush defense?

This shapes up to be a GREAT matchup!