Fantasy Question, Why is Manning so low?

[philfan05]

Assuming that TD are worth the same amount of points for RB as QBs and rushing yards are 10 yrds/point and passing yards are 25/point, why is Peyton Manning ranked so low in most fantasy football drafts? Most mock drafts I've seen have him going somewhere between 6-12. IMO, he figures to score more TDs than any other RB in the league, except possible LT. I would consider him the second best overall fantasy choice, but clearly the experts disagree.